-
Compareto and equals method
Difference between CompareTo and equals method.
-
Quorum Disk
What is Quorum Disk or partition in clustering?
vignesh
- Jul 26th, 2012
A quorum disk or partition is a section of a disk that's set up for use with components of the cluster project. It has a couple of purposes
Sandhya.Kishan
- Jul 5th, 2012
A quorum is the minimal number of votes that is needed in a cluster, usually the majority. So if we have 3 nodes in a cluster, that means we have a total of 3 votes in the cluster and we will need a m...
-
Focus
Use of Focus() method in asp.net
Sandhya.Kishan
- Jul 5th, 2012
The focus() method sets focus to the current window.When web page is loaded you can use a BODY onload event and javascript client code to set focus method(). Example The above example assumes a web ...
-
Servlet as the shared object
Can we use a Servlet as the shared object
Sandhya.Kishan
- Jul 4th, 2012
We can use servlet as a shared object by using as shared object the servlet can maintain its state by using its init() and destroy() methods to load and save its state.
-
Driver manager
What is driver manager?
Sandhya.Kishan
- Jun 19th, 2012
The Driver Manager is a library that manages communication between applications and drivers.The Driver Manager is used solves a number of problems related to determining which driver to load based on a data source name, loading and unloading drivers, and calling functions in drivers.
dev patel
- Jun 16th, 2012
In jdbc- object which can connect java application to a jdbc driver that is called driver manager.
-
-
what are the features of asp.net 4.0?
Sandhya.Kishan
- Jun 21st, 2012
Some other features of ASP.Net 4.0 are
1.Permanently Redirecting a Page
2.Better control of the ViewState
3.Chart control
4.Html Encoded Code Expressions
5.Better validation model (ASP.NET MVC)
dhivyapriyab
- Jun 20th, 2012
1.output cache extensibility
2.session state compression
3.routing in asp.net
4.increased URL character strength
5.new syntax for Html Encode
6.View State mode for individual controls -
MVC Design pattern
what is the difference between MVC1 and MVC2 in j2EE?
Read Best Answer
Editorial / Best Answer
Sandhya.Kishan- Member Since Mar-2012 | May 14th, 2012
1.MVC1 consists of Web browser accessing Web-tier JSP pages. The JSP pages access Web-tier JavaBeans that represent the application model, and the next view to display is determined by hyperlinks selected in the source document or by request parameters. 2.MVC1 is page-centric design, meaning any JSP page can either present in the JSP or may be called directly from the JSP page. 3.MVC1 Combines both presentation logic with the Business logic. 4.MVC1 we can have multiple controller servlets. 1.MVC2 introduces a controller servlet between the browser and the JSP pages. The controller centralizes the logic for dispatching requests to the next view based on the request URL, input parameters, and application state. 2.MVC2 removes the page-centric property by separating Presentation, Control logic and Application state. 3.MVC2 can have only one controller servlet .
Sandhya.Kishan
- May 14th, 2012
1.MVC1 consists of Web browser accessing Web-tier JSP pages. The JSP pages access Web-tier JavaBeans that represent the application model, and the next view to display is determined by hyperlinks sele...
-
Testing Steps - From which phase the testing should be started ?
As well as is there having any global standard testing phase which should be sequential. Like Unit testing - Module Testing ....so on.
Sandhya.Kishan
- Jun 12th, 2012
Testing starts at the requirement phase of the SDLC and continuous till the last phase of the SDLC. Steps involved in testing 1.Static testing includes review of documents required for the software d...
-
Time Issues
From 7:00 AM to 11:00 AM it rained 2.25 inches. At 11:00 AM the rain increased to fall at a rate of 1.25 in. every two hours. How many inches of rain landed on the ground by 5:00 PM? a)7 b)9.75 c)6 d)3.25 e)7.125
Sandhya.Kishan
- May 26th, 2012
Answer is c)6
11AM - 5PM = 6 hrs
rain increased 1.25 every 2 hrs
3. 3*1.25 = 3.75
total rain = 2.25 + 3.75 = 6
-
Write a test case for Fibonacci series?
Sandhya.Kishan
- Jun 25th, 2012
Test case for fibonacci series can be 1.When an zero is entered it should return a zero. 2.When a negative integer is entered it should not accept the value and should return an error msg. 3.When a p...
-
Why java Soft has declared HttpServlet Class as an Abstract class?Is there any performance issue?
In HttpServlet class there is no any abstract method although javasoft declared this class as an abstract class.Ok,this is valid in java.So if we want to utilize this class we will have to extends this class.But we can use to achieve this one by using Httpservlet class as simple java class also.
Ganesh Bhat
- Apr 3rd, 2015
The interface of HttpServlet is complete, but not the implementation/functionality of it. abstract restricts a developer to use the HttpServlet as is, rather it forces the developer to extend it and p...
Sandhya.Kishan
- Jul 4th, 2012
Java soft has declared httpservlet class as an abstract class for its performance, scalability and reusability issues and for security purpose.
-
BaselineTesting
What is Baseline testing? is it same for web and other type of testing?
Sandhya.Kishan
- Mar 17th, 2012
Baseline testing are testing standards to be used at the starting point of comparison within the organization.It is a test which is taken before any activity or treatment have occurred. Requirement specification validation is a baseline testing.
-
Why type of testings are available for VisualStudio 2010 ?
Sandhya.Kishan
- Mar 17th, 2012
Some types of testing available are:
1.ordered testing
2.unit testing
3.manual testing
4.load testing
5.coded UI testing. -
What is the default wait time in Silk test?
-
What is VLAN ?
what is vlan in vio server in aix ? What is its main purpose ?
Sandhya.Kishan
- Jul 11th, 2012
VLAN stands for virtual LAN,it is a broadcast domain created by switches.With VLAN’s, a switch can create the broadcast domain.The purpose of VLANS is to improve network performance by separating large broadcast domains into smaller ones.
-
inverse of matrix
program to find inverse of nth order square matrix?(c++)
Sandhya.Kishan
- May 29th, 2012
Void trans(float num[25][25],float fac[25][25],float r)
{
int i,j;
float b[25][25],inv[25][25],d;
for(i=0;i -
Write a program to identify a duplicate value in vector ?
Sandhya.Kishan
- Mar 20th, 2012
"c void rmdup(int *array, int length) { int *current, *end = array + length - 1; for (current = array + 1; array < end; array++, current = array + 1) { while (current < ...
-
How would you test in cloud ?
Sandhya.Kishan
- Jun 12th, 2012
By understanding a platform providers elasticity model/dynamic configuration method we can test in cloud.
-
What do you mean by package access modifier?
Sandhya.Kishan
- Mar 10th, 2012
Access modifier are used to implement encapsulation feature of oops.There are 3 access specifiers namely Private: The current class will have access to the field or method. Protected - The current cl...
-
Linked list in java
How to implement reverse linked List using recursion?
Sandhya.Kishan
- Apr 11th, 2012
The program is
List* recur_rlist(List* head)
{
List* result;
if(!(head && head->next))
return head;
result = recur_rlist(head->next);
head->next->next = head;
head->next = NULL;
return result;
}
void printList(List* head)
{
while(head != NULL) {
std::cout -
How can you read a SOL file using JAVA script?
Sandhya.Kishan
- Mar 7th, 2012
The methods IloCplex.readSolution and IloCplex.writeSolution is used to read a sol file in java script.
-
why we are using OOPS?
sivapurammani
- Dec 16th, 2013
Before introducing OOPS some other concepts are also introduced into the computer world, for example Procedure Oriented Language(The best example for this is C language) but these concepts are working...
mukesh jha
- Aug 8th, 2013
OOPS  stands for object oriented programming . They are  1. Abstraction 2. Encapsulation 3. Inheritance 4. Polymorphism Abstraction is representation of  some property without giving backgroun...
-
partial class
where do you use partial class ? Explain with real time scenario of the usage ?
Sandhya.Kishan
- Mar 12th, 2012
Splitting the class into multiple files is called as partial class.The compiler treated the files as different classes but during compilation these files will be treated as a single class. Example:If...
-
What is the situation you will need to use partial class in .net
Read Best Answer
Editorial / Best Answer
Sandhya.Kishan- Member Since Mar-2012 | Mar 12th, 2012
Visual Studio uses partial classes to separate auto-generated code from user-generated code. Example:Let us consider that visual studio creates a file called Form1.Designer.cs which holds the designer-related, auto-generated code. So in both Form1.cs and Form1.Designer.cs the Form1 class is declared as partial and the compiler joins them into one.
malik_malik
- Sep 23rd, 2012
When different programmers work on single project and all write a code in class .Every programmer declare this class as Partial class and implement own code at the end of the day this partial class have all functionality that all programmers put in this class.
Sandhya.Kishan
- Mar 12th, 2012
Visual Studio uses partial classes to separate auto-generated code from user-generated code. Example:Let us consider that visual studio creates a file called Form1.Designer.cs which holds the designe...
-
Iterative Algorithm
design an iterative algorithm to traverse a binary tree represented in two dimensional matrix
Sandhya.Kishan
- Jul 16th, 2012
A binary tree can be traversed using only one dimensional array. InOrder_TreeTraversal() { prev = null; current = root; next = null; while( current != null ) { if(prev == current.parent) { prev = cu...
-
Sigbus error ?
what is sigbus error
Sandhya.Kishan
- Mar 10th, 2012
When a bus error occurs a signal is sent to the processor called as sigbus signal.The constant for sigbus is defined in header file signal.h.Sigbus error is thrown when there is improper memory handling.
-
What do you mean Inscope and Outscope
Kumar
- Jul 14th, 2014
InScope - What are all testings we are going to conduct for the App. (Like - Functional testing, Regression Testing, Load Testing...etc.) Outof Scope - What are all the testings we are NOT going to c...
Sandhya.Kishan
- Mar 19th, 2012
We can define scope by defining deliverable, functionality and data and a;so by defining technical structure. In-scope are things the project generates internally e.g. Project Charter, Business Requir...
-
Raise application error
can we raise_application_error in exception block?? if we use what will happen?
Sandhya.Kishan
- Jun 18th, 2012
Whenever a message is displayed using RAISE_APPLICATION_ERROR, all previous transactions which are not committed within the PL/SQL Block are rolled back automatically . RAISE_APPLICATION_ERROR is use...
-
Error Handling
What is an error handling framework?
Sandhya.Kishan
- Mar 12th, 2012
Error handling framework indicates serious problems that a reasonable application should not try to catch. Most such errors are abnormal conditions.
-
what is firewall leakage testing
Sandhya.Kishan
- Mar 15th, 2012
Firewall leakage test provides the invaluable function of informing the user whether their firewall is providing adequate protection or not.Leak-testing programs are designed to exploit particular flaw and use a particular attack technique to break a firewalls standard protection mechanisms.
-
code switching and code mixing
what is the difference between code switching and code mixing?
Sandhya.Kishan
- Apr 27th, 2012
Concurrent use of more than one language in the same sentence of a conversation is known as code switching as
Code mixing refers to mixing of two or more languages in a speech.It occur within a multilingual setting where speakers share more than one language.
-
To print unique numbers eliminating duplicates from given array
write a java code to print only unique numbers by eliminating duplicate numbers from the array? (using collection framework)
Sandhya.Kishan
- May 26th, 2012
import javax.swing.JOptionPane;
public static void main(String[] args) {
int[] array = new int[10];
for (int i=0; i -
Floating Point Numbers
Why in c++ (0.1 + 0.1) is not equal to 0.2 ??
moin khan
- Sep 13th, 2013
It is obviously give 0.2 answer ...
Code- #include <iostream>
- #include<stdio.h>
- using namespace std;
- int main()
- {
- float a;
- a=0.1+0.1;
- printf("%f
- ",a);
- cout<<a;
- return 0;
- }
Sandhya.Kishan
- Mar 12th, 2012
The floating-point arithmetic in most computer languages is based on binary fractions (1/2, 1/4, 1/8, 1/16, ...) and not decimal fractions (1/10, 1/100, 1/1000, 1/1000,...)there is no ActionScript Number that is exactly equal to 0.1 because it require an infinite number of binary fractional bits.
-
Command routing in MDI
What is command routing in MDI
Sandhya.Kishan
- Mar 20th, 2012
Command routing is passing commands to its targeted objects.When a command is routed, it goes to the main frame. From the main frame, it is routed to the child frame of the active view; it is then rou...
-
What is the difference between an image and a map
Sandhya.Kishan
- Apr 11th, 2012
Image:An image is an exact replica of the contents of a storage device stored on a second storage device. Map:A file showing the structure of a program after it has been compiled. The map file lists ...
-
how to capture webtable values
Read Best Answer
Editorial / Best Answer
Sandhya.Kishan- Member Since Mar-2012 | Apr 11th, 2012
By using the function getroproperty("field name") we can capture webtable values.
Sandhya.Kishan
- Apr 11th, 2012
By using the function getroproperty("field name") we can capture webtable values.
-
Artificial intelligence
how do humans recognize a word?
Sandhya.Kishan
- Apr 5th, 2012
We basically process the shape of each individual letter in a word at the same time, and therefore determine the word itself. We then derive the semantics of the word using "back up" files in the brain.
-
how do you establish a connection between two ear files
Sandhya.Kishan
- Jun 22nd, 2012
The Connection Pool Manager is used to establish a connection between two ear files.
-
what is difference between query calculation and layout calculation
Read Best Answer
Editorial / Best Answer
Sandhya.Kishan- Member Since Mar-2012 | Apr 11th, 2012
The query calculation helps to create a report to add a new row or column with values that are based on a calculations. Layout calculation helps to create a report which contains run time information such as current time, date, and user name.It does not perform any operations on data.
Sandhya.Kishan
- Apr 11th, 2012
The query calculation helps to create a report to add a new row or column with values that are based on a calculations.
Layout calculation helps to create a report which contains run time information such as current time, date, and user name.It does not perform any operations on data. -
Define Raster and Vector Data.
Define raster and vector data. Explain what is the difference between raster and vector data?
Read Best Answer
Editorial / Best Answer
Sandhya.Kishan- Member Since Mar-2012 | Jul 4th, 2012
Raster data is a set of horizontal lines composed of individual pixels, used to form an image on a CRT or other screen.Raster data makes use of matrix of square areas to define where features are located. These squares are typically of uniform size, and their size determines the detail that can be maintained in the dataset.Raster data represent square areas, they describe interiors rather than boundaries. Vector data use X and Y coordinates to define the locations of points, lines, and areas (polygons) that correspond to map features, vector data tend to define centers and edges of features.They are excellent for capturing and storing spatial details
Sandhya.Kishan
- Jul 4th, 2012
Raster data is a set of horizontal lines composed of individual pixels, used to form an image on a CRT or other screen.Raster data makes use of matrix of square areas to define where features are loca...
-
How to send sms from java application ?
Sandhya.Kishan
- Mar 7th, 2012
Look up SMS gateway. TO send a text, your really just sending any EMAIL with the SMS gateway. Its very easy.
for instance, versions is: yournumber@vtext.com .So just have the user input the phone number and their carrier and then send email out using JavaMail. -
what are 4 member function for each object in c++.
Each C++ object possesses the 4 member fns, what are those 4 member functions.please tell me what i s the answer for this question.
Sandhya.Kishan
- Jun 13th, 2012
Each C++ object has constructor,default constructor,copy constructor and destructor as the member functions.
ABC
- Aug 24th, 2011
Following are four default functions available for each object
1) constructor
2) destructor
3) copy constructor
4) assignment operator -
How to Retrieve the Hidden Field Value
how to retrieve the value of hidden filed in one page from another
Sandhya.Kishan
- Apr 11th, 2012
In .aspx, you can access the hidden fields when the page is submitted by using -
string customerId = Request.Form["txtCustomerId"];
-
What is the difference between MLOAD and TPUMP ?
Sandhya.Kishan
- Apr 17th, 2012
1.TPump allows us to load data into tables with referential integrity which MultiLoad doesn't allow. 2.TPpump does not support MULTI-SET tables,but multiple tables can be loaded in the same MultiLoad...
-
how to write program to print descending order
Bhushan Pote
- Apr 6th, 2015
Bhushan
- Apr 6th, 2015
-
Which protocol is mainly used in web services?
Sandhya.Kishan
- Apr 16th, 2012
The protocols used in web services are 1.Transport Protocol: used for transporting messages between network applications and includes protocols such as HTTP(s), SMTP, FTP, as well as the recent Block...
-
Sizeofthe Variable
how to find the size of the (datatype) variable in java?in c we use sizeof() operator for for finding size of data type
Sandhya.Kishan
- Mar 27th, 2012
There is no any particular function in java to find the size of the variable,because java removes the need for an application to know about how much of space needs to be reserved for a primitive value, an object or an array with a given number of elements.
-
What services does the internet layer provide?
Sandhya.Kishan
- Apr 19th, 2012
The internet layer packs data into data packets known as IP datagrams, which contain source and destination address information that is used to forward the datagrams between hosts and across networks....
-
Is it possible to debug the RSA encrypting algorithm?
If yes, how it is possible?
Ritesh Kumar
- Nov 24th, 2015
Yes we can Debug the RSA Algorithm only by Brute Force Attack. So it takes minimum 5 years (Current records) time for a Super Computer to debug the entire combination of the probable passwords to debu...
Sandhya.Kishan
- Jul 7th, 2012
The RSA algorithm as it makes use of unique prime number which is not the same each time when being generated.Hence we cannot debug the algorithm.
-
What is DHCP Relay Agent?
Suthakar
- Dec 4th, 2012
We use DHCP Relays when DHCP client and server don't reside on the same (V)LAN, as is the case in this scenario. The job of the DHCP relay is to accept the client broadcast and forward it to the server on another subnet.
Sandhya.Kishan
- Mar 14th, 2012
It is a Bootstrap Protocol that relays DHCP(Dynamic Host Configuration Protocol) messages between clients and servers for DHCP on different IP Network.using DHCP in a single segment network is easy. I...
-
what is heartbeat in clustering?
Sandhya.Kishan
- Mar 14th, 2012
Heartbeat cluster is a program that runs specialized scripts automatically whenever a system is initialized or rebooted.This cluster allows clients to know about the presence (or disappearance!) of pe...
-
how round robin algorithm works ?
Sandhya.Kishan
- Mar 10th, 2012
In round robin algorithm time slices are assigned to each process in equal portions and in circular order, handling all processes without priority. Round-robin scheduling is simple, easy to implement,...
-
what are the parameters in http.conf file ?
Sandhya.Kishan
- Jul 11th, 2012
Some parameters are
1.mod_rewrite
2.WLLogFile
3.DebugConfigInfo
4.StatPath
5.CookieName
6.MaxPostSize
7.FileCaching -
what is the output of kill -3 pid ?
Pranaw
- May 6th, 2012
Kill -3 pid is used to create thread dump for the process id. This is basically used for troubleshooting and to understand what went wrong with the above process. Suppose some node of weblogic is not ...
-
What is enumerated data type ?
Sandhya.Kishan
- Jun 6th, 2012
Enumerated data type are the variables which can only assume values which have been previously declared. These values can be compared and assigned, but which do not have any particular concrete repres...
-
How will you test the font of any style ?
Eg: Verdana, Arial etc
pavan.7014
- May 30th, 2012
Thanks for the Answer Sandhya , Actually I have faced a question how shall we test the Font without using any tool.??
And one more query that , how can we test by previewing the font ?
Please help me out on the same....Sandhya.Kishan
- Mar 13th, 2012
The Font Control Panel allows you to configure font settings, organize fonts and preview font styles. Preview function is used to test fonts of any style.
-
Minimum number of comparisons required
What is the minimum number of comparisons required to find the second smallest element in a 1000 element array?
Sandhya.Kishan
- May 26th, 2012
999 comparisons are required to find the second smallest element in an array.
-
Report Defects to the Developer
In how many way we can report defects to the deveploer?
Sandhya.Kishan
- Apr 20th, 2012
We can report defects to the developer either in formal way or through informal way. Communicating the details of the failure with the developers in person, in email or over the phone is an informal ...
-
Verification Plan
How do you plan for verification in your project?
Sandhya.Kishan
- Mar 19th, 2012
The plan for verification of a project can include steps like
1.Develop verification plan.
2.Trace between specifications and test cases.
3.Develop Verification Procedures.
4.Perform verification.
5.Document verification results. -
C Program Execution Stages
Briefly explain the stages in execution of C program? How are printf and scanf statements statements being moved into final executable code?
Sandhya.Kishan
- Mar 8th, 2012
The stages of execution are:
* Making and Editing
* Saving
* Compiling
* Linking
* Loading
* Running
-
Object Repository Extensions
When do we use .mtr and .tsr extensions in QTP? State the difference with suitable example?
Sandhya.Kishan
- Jun 25th, 2012
We use filename.mtr as an extension for Per test object rep files.
We use filename.tsr as an extension for Shared Object rep files. -
Automation Testing Process
What is Automation Testing Process? What are the main steps invloved in it?
Dheeraj Shandilya
- May 21st, 2012
Automation testing is done to save a lot of rework as well as a lot of time. But it can be applied to stable system only. In general Automation testing involves six step : 1.) Decision to automate te...
mfsi_satyakamm
- Apr 24th, 2012
Automation Testing Process saves lots of time and rework. It is opted when there is repetitive work and is also used in case of regression testing. For Automation Testing Process, scripts are written...
-
Distance Between x and z Intercept
Determine the distance between x and z intercept of the plane whose eqn is 2x+9y-3z=18
Sandhya.Kishan
- May 26th, 2012
Sqrt of ((d/a)^2+(d/c)^2)
d=18 a=2 b=9 c=-3
(d/a)^2=81 (d/c)^2=36
Sqrt(81+36)=58.5 -
C Program Exectuion Stages
Briefly explain the stages in execution of C program ?How are printf and scanf statements statements being moved into final executable code?
Sandhya.Kishan
- Mar 28th, 2012
There are seven stages of execution
1. Forming the goal
2. Forming the intention
3. Specifying an action
4. Executing the action
5. Perceiving the state of the world
6. Interpreting the state of the world
7. Evaluating the outcome -
CLR and Base Class Libraries
Define clr and base class libraries.
Sandhya.Kishan
- Jul 17th, 2012
A base class library is a standard library to all common intermediate languages.With the help of common intermediate language the base class library can encapsulate a large number of common functions,...
tsf meir ... touseef
- Mar 26th, 2012
Clr = common language runtime works like the heart works fr any being........
-
Java Deadlock
How to avoid deadlock in Java?
Sandhya.Kishan
- Aug 1st, 2012
A deadlock occurs when one thread has the control for A and tries to get the control for B while another thread has the control for B and tries to get the control for A. Each will wait forever for the...
-
Indexes Searching Capabilities
How do indexes increase the searching capabilities?
Sandhya.Kishan
- Jul 25th, 2012
By using the concept of serial scanning the indexes can increase the searching capabilities.
-
Compress String
How to compress a String (algorithem)?
Sandhya.Kishan
- Aug 1st, 2012
"java import java.io.ByteArrayOutputStream; java.io.IOException; import java.util.zip.GZIPOutputStream; import java.util.zip.*; public class zipUtil{ public static String compress...
-
Open Files Simultaneously
How will you increase the allowable number of simultaneously open files?
Sandhya.Kishan
- Mar 15th, 2012
Instant File Opener allows to create a list of multiple files, programs, folders, and URLs to be opened at the same time by opening a single special file or by logging into Windows. Files are opened ...
-
Invoke Another Program
How will you invoke another program from within a C program?
Sandhya.Kishan
- Mar 8th, 2012
We can invoke another program by using function like system() call like system(test.exe).
-
Function Call
How will you call a function, given its name as a string?
Sandhya.Kishan
- Mar 15th, 2012
We cannot call a function whose name is a string, we have to construct a table of two-field structures, where the first field is the function name as a string, and the second field is just the functi...
-
URL Recording Mode
What is the use of URL Recording Mode ?
-
Read Input at Run Time
What are the different ways to read input from keyboard at run time?
Sandhya.Kishan
- Aug 1st, 2012
By using scanner class we can input data from the keyboard.By declaring the Scanner classs input as System.in, it pulls data from the keyboard (default system input).
-
Subject Marks
There are 5 Sub with equal high marks. Mark scored by a boy is 3:4:5:6:7 (Not sure). If his total aggregate if 3/5 of the total of the highest score, in how many subjects has he got more than 50%?
Tanvi
- Nov 17th, 2012
It is cleanly mentioned in question that he has scored 3 subjects
-
Find the Speed
An Engine length 1000 m moving at 10 m/s. A bird is flying from engine to end with x sec and coming back at 2x sec. Take total time of bird traveling as 187.5s. Find the to and fro speed of the bird.
Yongjie Liang
- Jul 19th, 2023
support time cut ratio 1:2, suppose that bird from begining to end fily 62.5s, so the train will levave 1000-625=375 m behind the original point. bird needs 375/62.5=6m/s will hit the end. now move t...
Sandhya.Kishan
- May 28th, 2012
Distancetravelled by the bird=2000m
time taken=187.5 sec
=375/2 sec
speed is in the ratio of 1:2
dividing the time in the ratio of 1:2
time to=375/2(2/3)=125 sec
speed=distane/time=1000/125=8 m/sec
speed in thefro direction=16m/sec -
What is pre-emptive data structure ?
Sandhya.Kishan
- Apr 27th, 2012
There are primitive data types but not primitive data structures.
Primitive data types are predefined types of data, which are supported by the programming language. For example, integer, character, and string are all primitive data types. -
Stacks Task
What kind of useful task does stacks support?
Read Best Answer
Editorial / Best Answer
Sandhya.Kishan- Member Since Mar-2012 | Apr 17th, 2012
Stack supports four major computing areas,they are 1.expression evaluation 2.subroutine return address storage 3.dynamically allocated local variable storage and 4.subroutine parameter passing.
Sandhya.Kishan
- Apr 17th, 2012
Stack supports four major computing areas,they are
1.expression evaluation
2.subroutine return address storage
3.dynamically allocated local variable storage and
4.subroutine parameter passing. -
Inherit Private/Protected Class
Can a private/protected class be inherited? Explain
Sandhya.Kishan
- Aug 1st, 2012
Yes, but they are not accessible. Although they are not visible or accessible via the class interface, they are inherited.
-
Masked Code
What is the number of masked code ee@?
Bharath Yadlapalli
- May 2nd, 2012
When kill -3 command is executed, it will quit from executing the process and additionally it will dump core for that process mentioned with pid.
-
DocType and DOM
What is DocType? What is DOM?
Augustin
- Jul 7th, 2012
DOM - API for HTML. It represents a web page as a tree. In other words, DOM shows how to access HTML page. DOCTYPE is used 1) for validation, "validator.w3.org" 2) specifies the version of HTML. ...
Sandhya.Kishan
- Apr 16th, 2012
The DocType declaration helps a document to identify its root element and document type definition by reference to an external file, through direct declaration.It helps in specifying certain attribute...
-
DataType Byte Values
What are the byte values of datatypes?
-
XML and SGML
What is the relationship between XML and SGML? Does XML replace SGML or is it a subset of SGML?
Sandhya.Kishan
- Mar 21st, 2012
SGML is the basis XML and HTML and provides a way to define markup languages and sets the standard for their form.SGML passes structure and format rules to markup languages.
XML is a subset of SGML.It is a meta language and is used to define other markup languages. -
Compute Average of Two Scores
Describe an algorithm to compute the average of two scores obtained by each of the 100 students
-
Race Around Condition
What is race around condition?
Read Best Answer
Editorial / Best Answer
Sandhya.Kishan- Member Since Mar-2012 | Apr 17th, 2012
A race around condition is a fault in the process or a system where the output or the result of the process is critically and unexpectedly dependent on the timing of other events. Race condition especially occurs in multithreaded or in distributed systems.
Sandhya.Kishan
- Apr 17th, 2012
A race around condition is a fault in the process or a system where the output or the result of the process is critically and unexpectedly dependent on the timing of other events.
Race condition especially occurs in multithreaded or in distributed systems. -
Data Migration
How will you migrate the data from one system domain to another system domain? What testing procedures will follow?
Sandhya.Kishan
- Jun 25th, 2012
Domain migration happens when servers are upgraded and the data (including any authentication and authorization information) must be moved to a new system, when an administrator changes from one ISP t...
-
Compile Time Constants
Do We Use const keyword only for compile time constants? Explain
Sandhya.Kishan
- Jun 6th, 2012
Const in C# is a compile time constant as it is closest considered like a #define of a literal value.It is used to define constant values. In C#, we can declare a const of any type as long as the val...
-
ActiveX Component
What project option causes the necessary files to be generated when the project is compiled?
Sandhya.Kishan
- Jul 12th, 2012
Gcc -c proc.adb is an option to generate the necessary files during compilation.
-
Print Using string copy and concate Commands
How will you print TATA alone from TATA POWER using string copy and concate commands in C?
Sandhya.Kishan
- Jun 15th, 2012
Include
#include
#include
int main()
{
char myString[] = "TATA POWER";
char output[10];
strcpy(output,myString);
output[4] = ;
printf("OUTPUT :%s
", output);
printf("ORGINAL STRING :%s", myString);
getch();
} -
Masked Code
What is the number of the masked code ee@?
Sthitaprajna kar
- Mar 20th, 2017
022 is the masked code.
-
Read the heights in inches and wieght in pounds
Read the heights in inches and wieght in pounds of an individual and compute and print their BMI=((weight/height)/height)*703
Sandhya.Kishan
- Apr 18th, 2012
#include
#include
void main
{
int h,w,bmi;
clrscr();
printf{"Enter your height in inches:"};
scanf{"%d",&h};
printf{"Enter your weight in pounds:"}
scanf{"%d",&w};
bmi=((w/h)/h)*703;
printf{"BMI=%d",&bmi};
getch();
}
-
State of the Art in QA
What is the "State of the Art in QA"?
Sandhya.Kishan
- Mar 19th, 2012
State of art in QA is an answer type in "The need for Semantic Inference in QA".Some features for such Answer type are:
>Labels questions with answer type based on a taxonomy
>Classifies questions (e.g. by using a maximum entropy model)
-
Smart Client
What is Smart Client?
Sandhya.Kishan
- Apr 12th, 2012
Smart client is an application which can simultaneously hold the advantages of the thin client such as auto-update,zero install and advantages of thick client such as high productivity and high performance.
sutharsanan
- Sep 27th, 2011
Smart client can be worked as thick client or thin client.
-
Microsoft XML
What is Microsoft XML?
Sandhya.Kishan
- Mar 17th, 2012
It is a service which enables the developers to create interoperable XML applications on all platforms of XML 1.0.
-
Java Copy Command
Write the Java version of MS DOS Copy Command
Sandhya.Kishan
- Jul 13th, 2012
The command FileUtils.copyFile(fOrig, fDest); is similar to ms ds copy command.
-
Names of Constraints
Oracle stores information regarding the names of all the constraints on which table? A)USER_CONSTRAINTS B)DUAL C)USER D)None of these
Naresh kumar
- Oct 3rd, 2012
Constraints divided into 3 types those are: 1. domain integrity constraints:- not null,check 2. entity integrity constraints:- unique,Primary key 3. referential integrity constraints:- foreign key In...
-
Functional Difference
What is the functional difference between wave trap, lighning arrestor, surge absorber.
Sandhya.Kishan
- Mar 17th, 2012
The function of Wave trap is to trap the communication signals of higher frequency sent from remote substation and diverting them to teleprotection panel in the control room substation. The function ...
-
Function that Counts Number of Primes
Write a function that counts the number of primes in the range [1-N]. Write the test cases for this function.
-
Advantages of ADO over Data Control
Name two advantages of ADO over data control.
Sandhya.Kishan
- Apr 6th, 2012
Some advantages of ADO over data control are 1.ADO is faster with most databases compared to data control. 2.ADO separates Datahandling and Database Structure manipulation,hence its easier to protect...
-
Grid Control
What is Grid Control? For what purpose it is used?
Sandhya.Kishan
- Apr 6th, 2012
DataGrid control is a control in vb which helps in displaying the entire table of a record-set of a database. The control also allows users to view and edit the data.
-
Average Temperature
The average temperature of Monday to Wednesday was 37C and of Tuesday to Thursday was 34C. If the temperature on Thursday was 4/5 th of that of Monday, the temperature on Thursday was?
vishwanatham
- Dec 27th, 2012
37 - 3 = 34
( (mon + tue + wed) / 3 ) - 3 = (tue+wed+thu)/3
( mon + tue + wed -9) / 3 = (tue + wed+ thu) /3
( mon + tue + wed - 9) = (tue + wed + thu )
mon - 9 = thu
(since thu = (4/5) mon )
(5 * thu)/4 - 9 = Thu
Thu = 36
-
DDL Operation Trigger
Which types of trigger can be fired on DDL operation? A. Instead of triggerB. DML triggerC. System triggerD. DDL trigger
-
Explain how Sequence Diagram differ from Component Diagram?
swati
- Jun 20th, 2014
1.Component diagrams are used to illustrate complex systems,they are building blocks so a component can eventually encompass a large portion of a system, but sequence diagrams are not intended for sho...
Sandhya.Kishan
- Apr 11th, 2012
1. A component diagram represents how the components are wired together to form a software system where as a sequence diagram is an interaction diagram which represents how the processes operate with ...
-
Design a Framework
What are the criterias that are considered to design a framework in QTP?
Sandhya.Kishan
- Apr 2nd, 2012
Some criterias in designing a framework are 1.Based on the requirements the framework should be kept simple, because Complexities can only destruct the whole purpose of framework. 2.As the project p...
-
Neutral Grounding Resistor
What is use of Grounding the Neutral of the star connecting transformer through resistor (NGR)?
Sandhya.Kishan
- May 17th, 2012
All electrical systems should have a link to ground.otherwise there will be severe ground insulation stress on transients. A neutral grounding transformer links the power system neutral to ground.
A resistors used for earthing the star point of a transomer and protect the transformer.
-
Flat Hit Numbers
If the number of hits become flat, then the issue is with,a)App Serverb)Web serverc)Db serverd)Authorization server
-
Garbage Collection Algorithm
What algorithm is used in garbage collection?
Sandhya.Kishan
- Aug 1st, 2012
The algorithms used by garbage collectors are
1.Naïve mark-and-sweep
2.Tri-color marking -
Section 508 Standards
What to you mean by Section 508 Standards. In what ways it is helpful in Testing?
Sandhya.Kishan
- Mar 14th, 2012
The Section 508 Standards provide technical requirements where the federal agencies should meet the needs of people with disabilities when they buy, build, maintain and use information and communicati...
-
Post Order Binary Tree Traverse
Design a conventional iterative algorithm to traverse a binary tree represented in two dimensional array in postorder.
Shikhar Singhal
- Jun 10th, 2013
When tree is implemented using linked list rather than 2-d array
Code- void traverse(tree head)
- {
- if (head.left!=NULL) traverse( head.left);
- if (head.right!=NULL) traverse(head.right);
- }
Sandhya.Kishan
- Mar 10th, 2012
In Postorder traversal sequence we first look for the left node then the right node and then the root. Algorithm:
Code- void postOrder(tNode n)
- {
- if(n==null)
- return;
- postOrder(n.left);
- postOrder(n.right);
- visit(n);
- }
-
Algorithm Characteristics
List out the characteristics of an algorithm
Sandhya.Kishan
- Mar 7th, 2012
1.It should be simple.
2.Generally written in simple language.
3.It involves finite number of steps.
4.should be executed in short period of time.
5.Output of algorithm should be unique. -
Importance of Algorithm
What is the importance of algorithms in the field of computer science?
Sandhya.Kishan
- Mar 7th, 2012
Algorithms are blue prints of a program which gives all the details and functionality involved in finding the solution to a problem.It is important as we can build a program on any platform with the help of an algorithm.
-
Pure Virtual Functions
How can you make a class as interface, if you cannot add any Pure Virtual Function?
Sandhya.Kishan
- Jun 13th, 2012
By putting a “virtual destructor inside an interface†makes a class an interface.
sangeeta
- Feb 21st, 2012
Add pure virtual destructor in that class
-
Two-Dimensional Arrays
A Two-dimensional array X (7,9) is stored linearly column-wise in a computer's memory. Each element requires 8 bytes for storage of the value. If the first byte address of X (1,1) is 3000, what would be the last byte address of X (2,3)?
Read Best Answer
Editorial / Best Answer
Sandhya.Kishan- Member Since Mar-2012 | Apr 17th, 2012
use the formulae X(i,j)=Base+w[n(i-1)+(j-1)] where m=7 ,n =9 ,i=2 ,j=3 hence 3000+8*[9(2-1)+(3-1)] =3000+8*(9+2) =3000+8*11=3088
Sandhya.Kishan
- Apr 17th, 2012
Use the formulae
X(i,j)=Base+w[n(i-1)+(j-1)]
where m=7 ,n =9 ,i=2 ,j=3
hence 3000+8*[9(2-1)+(3-1)]
=3000+8*(9+2)
=3000+8*11=3088 -
Bytecode to Sourcecode
How to convert bytecode to sourcecode?
Sandhya.Kishan
- Aug 1st, 2012
A Java Decompiler (JD) can convert back the Bytecode (the .class file) into the source code (the .java file).
-
Error Trapping Functions
Functions for error trapping are contained in which section of a PL/SQL block?
Sandhya.Kishan
- Apr 5th, 2012
The Exception section of the PL/SQL block contains the functions for error handling.
-
Internet and Telephone Network Topology
Which topology is mostly used as the internet & telephone network?
Rahul
- Mar 18th, 2013
In Internet WE mostly use Star Topology, But Mesh topology Is Secure,and In telephone System mostly , used Star Topology.
Sandhya.Kishan
- Apr 19th, 2012
Internet does not follow a standard topology,networks may combine topologies and connect multiple smaller networks, in effect turning several smaller networks into one larger one.
A ring topology can be used for telephone networks. -
EAI Internal and External IO
What is Internal IO and External IO?
Sandhya.Kishan
- Apr 12th, 2012
The internal io are created through EAI Siebel Wizard.These object have their base type as siebel business objects. The internal io are used in EAI Siebel Adapter BS through query methods. External i...
-
Change jar File Icon
How to change jar file icon.
Sandhya.Kishan
- Aug 1st, 2012
The jar file doesnt have an icon, its a system-wide setting that applies to ALL jar files.
-
UNIX Shells
What are the different types of shells available in UNIX?
-
QTP Unicode Compliant
Why is QTP referred to as Unicode compliant?
Sandhya.Kishan
- Jun 20th, 2012
QTP is refereed to as an Unicode complaint because it is recognizable with the unicode character set across various applications and it is supported only by the internet explorer.
mathan_vel
- Jul 15th, 2009
QTP is reffered to as Unicode Complaint, because it is not browser compatable. It's only supported by IE Browser. And more over some components are not able to record.
-
Protected Class in Assembly
What is assembly in .NET and What do you mean by protected class always present in the same assembly?
Sandhya.Kishan
- Jul 17th, 2012
The .NET assembly is a standard for the components built with Microsoft.NET.Assemblies can be executable (.exe) or non executable such as .dll(dynamic link library). There are two kind of assemblies ...
-
Thread Priority Levels
How many THREAD PRIORITY LEVELS levels are there in JAVA 3810 1224
Sandhya.Kishan
- Jul 4th, 2012
The priority of thread can be max,norm and min depending on the underlying os or JMV.
almas_23
- Aug 18th, 2008
The thread priority levels in terms of integer range from 1 to 10For max, min & medium priority we have the following:MAX_PRIORITY (value=10)NORM_PRIORITY (value=5)MIN_PRIORITY (value=0)
-
Requirements Elicitation process
Explain the various steps to conduct Requirements Elicitation process
Sandhya.Kishan
- Jun 25th, 2012
Stepe involved in elicitation requirement are 1.Identify the real problem, opportunity or challenge 2.Identify the current measure which show that the problem is real 3.Identify the goal measure to s...
-
Intersection table
What is an intersection table and why is it important?
Sandhya.Kishan
- Jul 6th, 2012
An intersection table implements a many-to-many relationship between two business components.
scud021
- Jul 20th, 2008
A table added to the database to break down a many-to-many relationship to form two one-to-many relationships
-
Define Delay time - Load runner
-
VB.NET testing
What's involved in end to end VB.NET testing?
Sandhya.Kishan
- Jun 18th, 2012
A software once completed goes though rigorous testing before its actual integration.It also goes through different types of software testing and also different types of integration. The different ty...
-
File Compression
how can we compress any text file using c. can anybody provide me sample code
Sandhya.Kishan
- Mar 8th, 2012
The function comp() can be used for compression.The compression logic for comp() should provide the fact that ASCII only uses the bottom (least significant) seven bits of an 8-bit byte. The compressio...
-
Requirement Gathering
Name three activities involved in requirement gathering
Sandhya.Kishan
- Apr 5th, 2012
Three activities involved in requirement gathering are
1.Eliciting requirement
2.Analyzing requirement
3.Recording requirement -
Integrity Rules
List the rules used to enforce table level integrity.
Sandhya.Kishan
- Apr 5th, 2012
There are 3 rules to enforce table level integrity. 1.Foreign key value can be modified only if we want to match the corresponding primary key value. 2.We cannot delete records either from parent or c...
-
Degree of Relationship
What is the degree of relationship? Name the three degrees.
kishorkakade
- Jul 27th, 2012
The number of entity type involved
i.e
One : Unary
Two : Binary
Three : Ternary
Sandhya.Kishan
- Jul 6th, 2012
Degree of relationship is the cardinality of relationship that defines the number of instances of one entity as it relates to the number of instances of the other entity.Depending on the combinations ...
-
Schedule Background Jobs
How to schedule background jobs at OS level?
Sandhya.Kishan
- May 17th, 2012
We can not completely schedule background jobs at OS level but we can trigger a background job which has already been scheduled by using sapevt tool.
By sapevt we can define jobs that wait for the occurrence of the event along with the parameter.
-
ISAPI Testing
What ISAPI testing?
Sandhya.Kishan
- Mar 12th, 2012
API testing is used for the system which has collection of API that needs to be tested. The system could be system software, application software or libraries.In API testing,we need to setup initial e...
-
Types of testing performed for any Windows
Enlist types of testing performed for any window in sequence?
Sandhya.Kishan
- Jun 23rd, 2012
The types of testing performed are
Security
Regression testing
User acceptance testing
Unit testing
System testing
-
RMAN Duplicate
Is it possible to specific tables when using RMAN DUPLICATE feature? If yes, how?
Sandhya.Kishan
- May 12th, 2012
It is possible to use RMAN duplicate features to specific tables,with RMAN Duplicate we first create a target or duplicate single instance database and then convert the single instance database to a RAC database.
-
Contemporary Information Technology
What is contemporary Information Technology?
Sandhya.Kishan
- Apr 25th, 2012
Contemporary Information Technology helps in understanding the history and development of communication and information technology.It deals with the applications and strategic uses of information technology; computer hardware, software and telecommunications and networking.
-
ORACLEs AIM
How are ORACLEs AIM (Application Implementation Methodology) used in testing?
Sandhya.Kishan
- Mar 13th, 2012
During testing oracles amis at Business System Testing which focuses on linking test requirements back to business requirements and securing project resources needed for testing. It supports utilizin...
-
what is smart object recognition
Sandhya.Kishan
- Jun 7th, 2012
Smart object recognition is used to identify the GUI objects in the screen. When u recording the script automatically the object recogniser records the objects in the screen.
-
QTP Bitmap Checkpoint
Where is the bitmap checkpoint information saved?
-
Organization Unit
What is Organization Unit? Features of Organization Unit and its benifits
Qasim Rafique
- Aug 6th, 2015
Additional benefit you may get along with all defined by Kishan, is that you can apply Group Policy on the OU.
GPO can only be applied at 3 levels in the AD.
SITE.
DOMAIN.
OU.
Hope it might help.Sandhya.Kishan
- Jul 7th, 2012
Organization Unit is a means in which we can keep objects such as user accounts, groups, computer, printer . applications.It allows us to assign specific permission to the users. Benifits 1.OUs can b...
-
What is the exact difference between QTP and RFT ?
Sandhya.Kishan
- Mar 9th, 2012
QTP has only one platform to develop scripts only in VBScript where as RFT has two platforms - Visual Studio and Eclipse to develop scripts in VB and Java respectively. In QTP the documentation avail...
-
Why contructors does not supports visual functions?
Read Best Answer
Editorial / Best Answer
Sandhya.Kishan- Member Since Mar-2012 | Apr 17th, 2012
Constructor does not support virtual functions because we need an object to invoke a virtual method in the first place and more over constructors are used to initializing objects,which is a static type.Virtual functions are invoked on the dynamic type of the object,hence the object may not be properly initialized when a constructor call is made.Since the derived part of the object would not be initialized during the execution of base class constructor,hence calling any virtual method from base class constructor does not work well.
Sandhya.Kishan
- Apr 17th, 2012
Constructor does not support virtual functions because we need an object to invoke a virtual method in the first place and more over constructors are used to initializing objects,which is a static typ...
-
What kind of modulation processes are adopted in Bluetooth technology?
Amit
- Jan 18th, 2018
Frequency Hopping Technique
Sandhya.Kishan
- Jul 7th, 2012
Bluetooth uses 0.5 BT Gaussian-filtered two-frequency shift keying (2FSK).
-
Why resultset being an interface can call next()
Sandhya.Kishan
- Jul 16th, 2012
A class which implements an interface implements its methods.When we obtain a reference to a ResultSet then we are getting an instance of a class that implements the ResultSet interface.Hence class provides concrete implementations of all of the ResultSet methods.
-
What is the extention of the .NET
Reshma
- Nov 15th, 2012
Network
-
What are the differences between TP lite and TP heavy
SANATH
- Mar 27th, 2014
Yes
Sandhya.Kishan
- Apr 25th, 2012
Tp lite monitors are the monitors which embed the services provided by TP monitor,these were available as part of the DBMS or middleware software provided by vendors like Sybase, Gupta, and Oracle.hen...
-
What are the differences between IIS 5.0 and IIS 6.0?
Sandhya.Kishan
- Mar 16th, 2012
Some differences are 1.IIS 0.5 uses operating system with 32 bit architecture where as IIS 0.6 uses 32bit and 64 bit architecture. 2.IIS 0.5 has binary metebase configuration but IIS 0.6 has XML confi...
-
How do you perform subnet addressing ?
kripamoy
- Sep 14th, 2012
Subnetting divides one large network into several smaller ones. It adds an intermediate level of hierarchy in IP addressing.
Sandhya.Kishan
- Apr 19th, 2012
To create or to perform subnet addressing the local address should be divided into a number identifying the physical network and a number identifying the host on the subnet. Then the senders route m...
-
What is XSNL?
Sandhya.Kishan
- Mar 21st, 2012
XSNL(XML search neutral language) is a language which acts between the meta search interface and the targeted system, it is built to be as flexible and fine grained as possible.
It is used for the development of an advanced meta search engine specialized in newspaper news. -
What is scientific language?
Sandhya.Kishan
- Mar 22nd, 2012
Scientific language is a programming language for the use of mathematical formulas and matrices.ALGOL, FORTRAN, and APL Are some of the scientific languages in computer programming.
-
What is .xba file?
Ashwinshenoy7
- May 8th, 2011
Let me tell you where exactly it is used and what it does as per my knowledge.Application library used by OpenOffice.org, an open-source productivity suite; contains the functionality for the componen...
-
Post block trigger belongs to which type of trigger?
-
What is a value set?
Sandhya.Kishan
- Jul 6th, 2012
Value set is a collection of values.A value set associated with a report parameters, provides a list of values to the end user to accept one of the values as report parameter value.
-
What is unabridged list?
Sandhya.Kishan
- Mar 8th, 2012
An unabridged list is an information which is not reduced in length by condensing.
-
-
What are data model and class model in Object Oriented Approach specially in C++?
Sandhya.Kishan
- Mar 10th, 2012
Data model is an abstract model which describes the representation and usage of data.In oops context data are modeled as units of objects and data model represents the logical organization of real wor...
-
What is the exact difference between QTP and RFT ??
Sandhya.Kishan
- Jun 20th, 2012
The main difference between QTP and RFT
QTP uses VB script, RFT uses Java or .Net script
QTP user friendly, RFT not that much user friendlysujee
- Feb 20th, 2008
QTP is a Mercury product and RFT is IBM product.The basic difference is that, in RFT we can use Javascript and in QTP we cant use the Javascript.Ofcourse, VB scripting can be used in both of the tools...
-
What is the difference between RFT and QTP ??
Sandhya.Kishan
- Jun 12th, 2012
1.QTP uses lite weight scripting language. RFT uses powerful language Java. 2.QTP - started by Mercury and taken over by HP. RFT - started by Rational and taken over by IBM. 3.QTP has only one pl...
-
What are the different types of load Conditions?
Sandhya.Kishan
- Mar 8th, 2012
The types of load conditions are:
Performance test
Load test
Stress test
Capacity test -
What is the difference between implicit function & explicit function.
qaisar badshah
- Mar 22nd, 2013
Is the equation of circle is explicit function or not
Sandhya.Kishan
- Jun 13th, 2012
A function in which the dependent variable has not been given in terms of the independent variable is known as implicit function.Ex: 2x-y = 3 A function which determines the output value in terms o...
-
How does a bluetooth work?
Kuldeep Chaturvedi
- Jun 16th, 2017
Bluetooth works on radio waves.
This technology operates on 2.4GHZ spectrum. which is generally known as ISM (Industrial/Scientific/Medical).
BT share this spectrum with IR, WiFi technology as well.
Since ISM is widely used and free, BT is widely acceptable technology.Sandhya.Kishan
- Jul 7th, 2012
A Bluetooth enabled device can connect to other Bluetooth enabled devices in proximity. Each device can simultaneously communicate with up to seven other devices within a single piconet.The data betwe...
-
What is revoke and checklist?What is the output of User Acceptence testing?
Sandhya.Kishan
- Mar 19th, 2012
Revoke is a command to removes user access rights or privileges to the database objects.
Checklist is a command which lists the tests which should be performed on a particular process.
The output depends on eh test cases and the cases depends on the choice and complexity of the project. -
-
What is MTBF? Explain in Suitable Examples.
Sandhya.Kishan
- Jun 20th, 2012
MTBF stands for Mean Time Between Failures.MTBF tells us the most frequent failures within a process.It is the sum of the operational periods divided by the number of observed failures.
radhika
- Jul 19th, 2007
MTBF means mean time between failures.failure--------------------repair--------------------failure<------MTTR---------------><-----MTTF-----------------><--------------------------MTBF-...
-
-
what is factory class?
Sandhya.Kishan
- Jun 13th, 2012
It is a class which provide an interface for creating families of related objects.It encapsulate the logic which helps to decide which subclass should be instantiated and hence removes this decision f...
00elton00
- Aug 5th, 2007
A Factory class is one that is used to return instances of other classes. This is generally used in the context of Factory Design Pattern.
-
What are Application Clusters in CRM?
Read Best Answer
Editorial / Best Answer
Sandhya.Kishan- Member Since Mar-2012 | Apr 17th, 2012
CRM application cluster is a software that ranges in size and complexity making it possible for an organization to select the type of software needed the most. It consists of how a customer is related to sales,marketing and fulfillment,customer service and support,retention and loyalty program and contact and account management.
Sandhya.Kishan
- Apr 17th, 2012
CRM application cluster is a software that ranges in size and complexity making it possible for an organization to select the type of software needed the most. It consists of how a customer is relate...
-
What is Cascade and Drill Through? What is the difference between them?
Sandhya.Kishan
- Apr 12th, 2012
Cascade is a process which takes values from other prompts.It results in a single report and is used based on some condition. Drill through is a process which bis used to navigate from summary to deta...
-
What are structured test methods and processes.
pprem
- Aug 13th, 2017
Structured test methods, processes and structured based testing are same?
Sandhya.Kishan
- Jul 21st, 2012
Structured test methods replace functional testing in the highest density, these devices offers a rational alternative to functional test. It uses fewer test patterns but generates patterns to detect ...
-
What can a method do with a checked exception?
Sandhya.Kishan
- Jul 13th, 2012
With a checked exception a method can either throw an exception to the method which calls it or it can handek the exception in the catch block.
-
Is it possible to connect two private networks through Internet using VPN concentrator?
Sandhya.Kishan
- Jul 7th, 2012
VPN is used to make remote connections i.e,it is used to connect remote sites or users together with the help of a public network (usually the Internet). It uses "virtual" connections routed through t...
satamga
- Sep 8th, 2010
Yes, The use of VPN is to secure connection between two private networks over the internet.
-
How many strings can we declare in an array in QTP?
Sandhya.Kishan
- Jul 10th, 2012
We can declare a string element sized upto 8203 characters in an array.
-
What is the netted IP?
Sandhya.Kishan
- Mar 16th, 2012
Using a single IP address and locally splitting it up so that this single network IP address can actually be used on several interconnected local networks is known as netted IP.
-
What are headers and trailers? How are they added and removed?
Sandhya.Kishan
- Mar 16th, 2012
Headers and trailers are the concepts of OSI model. Headers are information structures which identifies the information that follows, such as a block of bytes in communication. Trailer is the informat...
-
-
What is the other name for static-passive flexibility?
-
What is static-active flexibility?
Sandhya.Kishan
- Mar 30th, 2012
Static-active flexibility is the ability to stretch an antagonist muscle using only the tension in the agonist muscle.
-
What are the possible outcomes of flexibility?
-
What are the analysis a tester should perform before carrying out whitebox testing?
Sandhya.Kishan
- Mar 9th, 2012
White box testing provides the testers with complete knowledge of the infrastructure to be tested, often including network diagrams, source code, and IP addressing information. It can be performed to...
-
What is dynamic flexibility?
Sandhya.Kishan
- Mar 31st, 2012
Dynamic flexibility is the range of motion which is achieved by actively moving body segment using muscular action.
It is important for developing speed and power.
-
What is Wireless Test Executive?
Sandhya.Kishan
- Mar 14th, 2012
Wireless test executive is an easy-to-use graphic interface for controlling test selection, execution, and runtime options. Tests are displayed in a hierarchical list where each entry represents one t...
-
How is whitebox testing used with Integration testing?
Sandhya.Kishan
- Mar 9th, 2012
Integration testing looks at how all components of an application interact. White box integration tests specifically look at the interfaces between the components.
-
What is the Law of Flexibility?
Sandhya.Kishan
- Apr 12th, 2012
The law of flexibility says that the success is best achieved when you are clear about the goal but flexible about the process of getting there.
-
What is Flexibility leadership?
Sandhya.Kishan
- Apr 12th, 2012
Flexibility leadership is a quality executed by the leaders who are self-aware, create personal guiding principles and are flexible in their leadership approaches. There are a set of leadership traits...
-
What are the different levels in Wireless Testing?
Sandhya.Kishan
- Mar 14th, 2012
Levels of testing:
1.Usability Testing
2.Network Performance Testing
3.Server-Side Testing
4.Automating Unit Testing -
What is Data flow testing present in whitebox testing?
Sandhya.Kishan
- Mar 9th, 2012
Data flow testing is a White-box test design technique.The testing is based on selecting paths through the programs control flow in order to find the sequence of events related to the status of data objects.It uses control graph to find the anomalies.
-
What technologies are used with Wireless Testing?
Sandhya.Kishan
- Mar 14th, 2012
The technology used will determine the type of test environment and tools that we need. * WAP * Bluetooth, etc. * XML, WML * Security protocols Tools * WAP Simulators by hardwar...
-
What is the visibility of a tester in Whitebox Testing?
Sandhya.Kishan
- Jun 14th, 2012
White box testing has full visibility of the internal workings of the software product, specifically, the logic and the structure of the code. The purpose of any security testing method is to ensure t...
-
What is WebCombo Box in Asp.net2.0
Waiting 4 ans
shra1kalyani
- Feb 5th, 2013
n .NET2.0 ComboBox and TextBox has the facility. Just set the Autocomplete property to any of the following {Suggest,Append,SuggestAndAppend} And the Autocomplete DataSource to any one of the followin...
Sandhya.Kishan
- Jul 5th, 2012
A web combo box is used to manipulates the dataset rather than query the database everytime, to shorten the resulting resultants.
-
How to convert a form that contain some chart and some textbox to PDF in Visual Basic ?
-
-
How are hex literals specified in VBScript?
Sandhya.Kishan
- Apr 16th, 2012
The hex literals are specified using"Hex()" method in vb script.
Example:
a = 25
Wscript.Echo Hex(a)
The output of this script is 19, which just happens to be the hex equivalent of 25.
-
What is the use of optional key word in VBScript?
Sandhya.Kishan
- Apr 16th, 2012
Vb Script functions cannot use the Optional keyword because it Vb Script we need to declare every argument that we want to use. In Visual Basic the Optional keyword, which allows some arguments to be ...
-
Fuzzy logic system rely on
1. Crisp binary choices 2. Ambiguous data 3. Decision makers 4. All of them
Sandhya.Kishan
- Jun 13th, 2012
Fuzzy logic system relays on all Crisp binary data, ambiguous data and on decision makers.
-
basic elements of a picture in volume graphics
the basic elements of a picture in volume graphics is 1. pixel 2. volsel 3. voxel 4. either pixel or voxel
Read Best Answer
Editorial / Best Answer
Sandhya.Kishan- Member Since Mar-2012 | Jul 4th, 2012
The basic elements of a picture in volume graphics is voxel.
upasi
- Apr 26th, 2018
1. pixel
mahata
- Feb 13th, 2016
3. Voxel
-
The network address made available to the transport layer should use a uniform numbering plan
1. In a session 2. In a LAN3. In a WAN 4. across LAN and WAN
-
what are the levels(level-1,level-2........) of functional testing?
Sandhya.Kishan
- Jun 14th, 2012
Functional testing is related to what the system does , it is also called blackbox testing
level-0 sanity testing
level-1 comprehensive testing
level-2 regression testing
level-3 re-regression testing -
Which languages are included in object based languages other than VB and java script
Sandhya.Kishan
- Jun 13th, 2012
Object-oriented languages include Simula, Smalltalk, C++, Eiffel, Python, Ruby, C# and REALbasic other than Vb and java script.
harpreet sran
- Nov 15th, 2007
Other object oriented languages are c++ & simula 67
-
In CORBA, the 'MessageError' GIOP type is used for?
Sandhya.Kishan
- Jun 22nd, 2012
"Messageerror" GIOP type is sent as a response to the malformed or otherwise invalid messages. It is not used to report errors outside the messaging system; such errors are reported using the Reply message.
-
Which of the following are valid types of COM servers
A: In-process B: Local and remote C: All of the above D: None of the above
-
What is the technology used in VoiceXML?
Sandhya.Kishan
- Mar 21st, 2012
SpeechFrame is the technology used in voiceXML.It allows the web developer to write, drag-drop and test new VoiceXML applications. SpeechFrame converts web based business processes in vocal services t...
-
The Relational model has _____ components?
ZAHID
- Nov 20th, 2016
Three Components:
1. Data Structure (Data organization in the form of table with row and table)
2. Data Manipulation (Operation perform(using SQL) on data stored in relation)
3. Data Integrity (Maintain data stored in relation for long time)Sandhya.Kishan
- Jul 6th, 2012
The Relational model contains 3 components 1)set of relations and set of domains ( data structure).
2)Integrity rules (data integrity) and
3)The operation that can be operate on the data (data manipulation). -
What is Registry
Sandhya.Kishan
- Mar 13th, 2012
Registry is a database used by Microsoft Windows to store configuration information about the software installed on a computer. The Windows registry consists of the following six parts: HKEY_User - c...
-
What is the Diff between SIT & IST?
Sandhya.Kishan
- Jun 12th, 2012
SIT stands for System Integration Testing, it is a process of testing the source code developed and fixes some variance before proceeding to the next testing phase. IST stands for Interconnect Stress...
-
What files are created in QTP?
-
Where this DataSet is Stored?
Sandhya.Kishan
- Jul 17th, 2012
A data set is stored on the client side and it cannot access the database directly.
Scarface
- Nov 16th, 2006
Dataset is an in-memory representation of a database. Its stored no where but in memory. Goes off when GC stats after a littl sleep.
-
What are frames?
Sandhya.Kishan
- Jul 21st, 2012
Frames is a feature supported by most modern Web browsers than enables the Web author to divide the browser display area into two or more sections (frames). The contents of each frame are taken from a different Web page. Frames provide great flexibility in designing Web pages.
sudhakar2068
- Dec 14th, 2006
The use of multiple, independent sections to create a single Web page. Each frame is built as a separate HTML file but with one "master' file to identify each section. When a user requests a page with...
-
What is mask defect
Sandhya.Kishan
- Jun 23rd, 2012
Masked Defect is a defect which is hiding another defect. E.g. there is a link to add employee in the system. On clicking this link you can also add a task for the employee. Let’s assume, both the f...
-
What is QCD
Sandhya.Kishan
- Jul 21st, 2012
The QCD architecture provide a highly cost-effective, massively parallel computer capably of focusing significant computing resources on relatively small but extremely demanding problems. In QCD arch...
-
How to implement bluetooth?
Kuldeep Chaturvedi
- Jun 16th, 2017
Bluetooth is a short range wireless technology mainly used in consumer devices like phone, carkit, headsets, wearable etc. It is for voice and data transfer. I assume we have a board having a micro c...
Sandhya.Kishan
- Jul 7th, 2012
The GameKit framework contains APIs to allow communications over a Bluetooth network.These APIs allow us to transfer data among the different devices.
-
What are the attributes that make up a DHTML? ">
What are the attributes that make up a DHTML?
DHTML is called as Dynamic HTML. This is used to increase the interactive ability and the visual effect of the web pages which is loaded in the browser. The main technologies that are used in DHTML are namely: HTML JavaScript CSS which is also called as Cascading Style Sheet DOM also called as Document Object Model Let us see each of these in brief. JavaScript: JavaScript...
Sandhya.Kishan
- Mar 9th, 2012
The attributes that make up DHTML are HTML, JavaScript, CSS and DOM. These are explained below as: Java script: JavaScript is the popular scripting language on the internet, and it works in all major...
-
What is PWP??? Someone else has also asked in web testing questions.
-
can we use GoTo statements in QTP. if not is there any other option for that?
Sandhya.Kishan
- May 4th, 2012
In QTP there is no goto statement hence by using conditional statements along with looping statements behaves like the goto statement.
-
How do Computer Aided Software testing tools support test management?
bhargavi vittalsingh
- Feb 19th, 2013
Software testing tools support for Time consumption and we can ensure efficiency of the product level from the customer point of view.
Sandhya.Kishan
- Jun 20th, 2012
Computer aided software testing tools support test management to define what to test, how to test, when to test and what happened, it reduces time, requires less man power and it also provides testing statistics for management reporting.
-
How to parameterize checkpoint ?
Insert the checkpoint and right click on the checkpoint statemnt and then select checkpoint properties option,checkpoint properties dialog box will be opended. Select the property which u want to parameterize and check the parameter radiobutton.Click on parameter options button and select relevant options and enter the parameter name and click on ok. Finally click on ok button.
Sandhya.Kishan
- Apr 2nd, 2012
To parametrize a check point we need to insert and click on checkpoint and select properties option and parametrize the property which is required ,Click on parameter options button and select relevant options and enter the parameter name and click on ok. Finally click on ok button.
In OOPS do curent memory locators provide enough speed or flexibility?
Sandhya.Kishan
- Mar 15th, 2012
OOPs memory locators provide enough flexibility as it is frindly to the programmer,rather we can say objects talking to each other and maintaining their relationship.
what are the attributes of test automation
Sandhya.Kishan
- Jun 14th, 2012
The attributes of test automation Maintainability,Reliability ,Flexibility ,Efficiency ,Portability ,Robustness and
Usabilitywhat are the disadvantages of checkpoints?
Sandhya.Kishan
- Mar 20th, 2012
One of the disadvantage is that is it consumes a lot of CPUs time for checking the given functionality.
What is ContentisTesting
Sandhya.Kishan
- Jun 23rd, 2012
Content testing checks whether the users can easily understand all items that appear on a site.
Content testing having a low fidelity design and it includes basic formatting are : Navigation,Usefulness,Tone and Style,Organization and readability.
Explain windowbase & webbased application?
Sandhya.Kishan
- Apr 2nd, 2012
Web based application:An application that is accessed over a network such as the Internet or an intranet are known as web based applications.These applications are popular as they have the ability to ...
Whais Soap, AIS, CAT Testing
Sandhya.Kishan
- Jul 21st, 2012
SOAP stands for Simple Object Access Protocol.It is a communication protocol between applications.It is based on XML and is a format for sending messages via Internet.It is is a W3C recommendation. A...
how to add recovery scenario's to Test Settings through script
Sandhya.Kishan
- Jun 21st, 2012
By using "Recovery.GetScenarioName Iter, ScenarioFile, ScenarioName" statement we can add recovery scenarios to test settings.
Can we execute Stored Procedures using WR/QTP? If yes how?
Which Dynamic objects are using in QTP?
Sandhya.Kishan
- Jun 23rd, 2012
Dynamic object is an object which changes its properties at the run time and thus its mandatory properties cant be predicted from the starting. By using DP and Regular expressions we can work with Dynamic Objects in QTP.
how to convert java applets into image file?
Sandhya.Kishan
- Jul 10th, 2012
May be Applet.getImage(new URL(...)) can be used to convert java applet into image file.
munavar.shaik
- Jan 18th, 2011
Java applets are not used in DWH. So its irrelevant question in DWH concepts group.
What is the difference between the Hot key and shortcut key
Sandhya.Kishan
- Jul 10th, 2012
The shortcut keys are related to a specific window and will only work in that window. It is part of the name of a menu item or button, where it can be underlined, and is available (without modifiers) ...
elanchum
- Jul 18th, 2011
Hotkey: which is used to open r close an application.....
shortcutkey: used to perform actions with in the application....what is table operator ?
Sandhya.Kishan
- Apr 6th, 2012
Table operator is used to correlates each row of left-hand side table expression to right hand-side table expression.
what is the difference between thin client and thick client?
Sandhya.Kishan
- Jun 19th, 2012
Thin Clients 1.Easy to deploy as they require no extra or specialized software installation 2.The data captured is verified by the server. 3.Clients run only and exactly as specified by the server 4.R...
jyotsna
- Apr 20th, 2006
Thin client is browser based and thick client is window based
1)which .net host doesn't support application domain a)iis b)INTERNET explorer c)shell executable d)asp.net 2)in .net there is no deterministic destruction true/false 3).net runtime is having -------- type(s) of isolation4)how to implement 2 connect 2 a proxy with a remote service Please give me reply. 5)ow can we include unmanaged code into .net?
Sandhya.Kishan
- Mar 29th, 2012
1)Shell executable doest support application domain.
2)True,in .Net there is no deterministic destruction
3).net runtime is having two types of isolation.Is QTP supports the reports(Business Objects) to automate.
Sandhya.Kishan
- Apr 2nd, 2012
The qtp support for business objects depends on the primary language used through proper add-ins.
If Java, use the Java add-in (and maybe the Extensability).
If VB, use the VB add-in.
If web based, use the Web add-in.
and so on
Hence it depends on programming language.
how to import data for data driven test?
Sandhya.Kishan
- Mar 20th, 2012
We can import data by using DataTable.ImportSheet "....TestDataInput.xls",1,dtGlobalSheet
give an example of a built-in-function and any user-defined function?
Sandhya.Kishan
- Apr 30th, 2012
Built-in function are the functions which are already present in the standard library files and they can be accessed directly Example sqrt(),round() etc... .sqrt() the above example returns the...
An interface contains _________ methods
Skill/Topic: InheritanceA) AbstractB) Non-abstract C) Implemented D) Un-implemented
Wait, property,exist syntaxes with examples.
Nitin
- Jun 12th, 2012
Wait Property is used for synchronization in QTP.It forces QTP to wait before going to the next step.Suppose an object can display in 5 second and we insert wait(10) then it will allow QTP to wait fur...
Sandhya.Kishan
- Apr 30th, 2012
Wait property Syntax: Object.waitproperty "property name", "property value", time out. Example: y = Window("Test").WaitProperty("focused", True, 3000) Here we use the WaitProperty method to make the p...
The constructor of the Hashtable class initializes data members and creates the hashtable.
Skill/Topic: Hash TableA) TrueB) FalseExplanation: The constructor of the Hashtable class initializes data members and creates the hashtable. The size of the array of pointers (tablesize) is passed to the constructor when the application declares an instance of the Hashtable class
Sandhya.Kishan
- May 19th, 2012
The size of the array of pointers (tablesize) is passed to the constructor when the application declares an instance of the Hashtable class and therefore the constructor of the hashtable class initializes data members and creates the hashtable.
GetSize() function is used to protect the integrity of the Data.
Skill/Topic: Hash TableA) TrueB) FalseExplanation: The getSize() member function of the Hashtable class reads the size data member of the Hashtable class and returns its value to the statement that calls the getSize() function. If you gave the application direct access to the size data member, statements within the application could assign an incorrect value to size. By controlling access to size to...
Sandhya.Kishan
- May 14th, 2012
True,GetSize() function is used to protect the integrity of the Data by controlling the access to the size parameter, such that only the function members of the hashtable can access the size parameter.
The hashString() member function is called by other member functions of the Hashtable class whenever a function needs to convert a ________________.
Skill/Topic: Hash TableA) a hash number key to a keyB) key to a hash number keyC) a key to an IndexExplanation: The hashString() member function is another function called by other member functions of the Hashtable class whenever a function needs to convert a key to a hash number key. The hashString() function requires one argument, a char pointer to the key that is being hashed. The hash number that...
rasheed
- Feb 14th, 2013
C) a key to an Index
Sandhya.Kishan
- May 21st, 2012
The hashString() member function is called by other member functions of the Hashtable class whenever a function needs to convert a key to hash number key.
The hasNext() function determines if there is another entry in the hashtable based on the current state of the iterator.
Skill/Topic: Hash TableA) TrueB) False
Sandhya.Kishan
- Mar 26th, 2012
True,the hasnext() function determines if there is another entry in the hashtable based on the current state of the iterator.
The java.util package contains two classes that are designed to work with hashtables. They are _______ and _________.
Skill/Topic: Hash TableA) Hashtable , HashMap class
Sandhya.Kishan
- May 8th, 2012
Hashmap and hashtable are the classes which the Java.Util package contains to work with hashtables.
The C++ version of the hashtable application is simpler than the Java version.
Skill/Topic: Hash TableA) TrueB) FalseExplanation: The Java version of the hashtable application is simpler than the C++ version because the Java version defines the Hashtable class in the Java Collection Classes that are defined in the java.util package
Sandhya.Kishan
- May 14th, 2012
The hash table applications of java are simpler then c++ because java defines a class in java collection class called HASHTABLE class which is present in the java.util package.
Hashing is performed at Bit level.
Skill/Topic: Hash TableA) TrueB) False
Sandhya.Kishan
- Mar 26th, 2012
True, hashing is performed at bit level by using a hash function. A hash function is any function that can convert data to either a number or an alphanumeric code.
Why are data members of the Hashtable class stored in the private access specifier?
Skill/Topic: Hash TableA) Data members of the Hashtable class are stored in the private access specifier to ensure the integrity of the data. Only member functions can assign and retrieve values of these data members.
Sandhya.Kishan
- May 29th, 2012
The data members of the hashtable class stored in the priVATe access specifier as members can be used by the class itself or by friends.It ensure data integrity.If the members are declared as private then only mamber functions can assign and retrive values.
A key entered by an application be directly compared to a key in a hashtable.
Skill/Topic: Hash TableA) TrueB) FalseExplanation: No. A key entered by the application must be hashed before it can be compared to a key in the hashtable.
Sandhya.Kishan
- May 8th, 2012
False.
The key entered must be hashed before an application compares it with the hash key table.How is a key hashed?
Skill/Topic: Hash TableA) A hash key is created by bit shifting a hashed value and then adding to the value bits of a character of the key entered by the application
Sandhya.Kishan
- Mar 26th, 2012
A hash variable can be created the same way as an array variable.The simplest method is to create an empty hash object and fill it with key/value pairs. Arrays use numeric indexes, from 0 to array.length - 1, hashes use meaningful indexes, normally strings or symbols.
Hashing results in a hash number that has great significance.
Skill/Topic: Hash TableA) TrueB) FalseExplanation: Hashing results in a hash number that has no real significance beyond it being used as the key for an entry.
Sandhya.Kishan
- May 19th, 2012
The hash number resulted from hashing is used as the key for an entry.
A value is also a component of a node that is used to store data.
Skill/Topic: TreeA) TrueB) False
Sandhya.Kishan
- May 8th, 2012
True, a value is also a component of a node which is used to store data.
A ______ is a component of a node that identifies the node.
Skill/Topic: TreeA) ValueB) TreeC) KeyD) IndexExplanation: A key is a component of a node that identifies the node. An application searches keys to locate a desired node
Sandhya.Kishan
- May 8th, 2012
The data model provides unique keys as a component of the node which identifies the node.
The removeNodeAt() function removes a node by using the node’s index?
Skill/Topic: Stacks and Queues: Insert, Delete, Peek, FindA) TrueB) FalseExplanation: The removeNodeAt() function removes a node by using the node’s index rather than the reference to the node in memory
Sandhya.Kishan
- May 19th, 2012
True, the removenodeat() function removes a node by using the nodes index and not by the the reference to the node in memory.
The insertNodeAt() function places a new node at a specific location in the linked list.
Skill/Topic: Stacks and Queues: Insert, Delete, Peek, FindA) TrueB) False
Sandhya.Kishan
- Mar 26th, 2012
True , the insertNodeAt() function can place a node at the front or back of a linked list if you pass the appropriate index to this function.
The _______ function retrieves the value of the size member of the LinkedList class.
Skill/Topic: Stacks and Queues: Insert, Delete, Peek, FindA) getSize()B) giveSize()C) seeSize()D) addSize()Explanation: The getSize() function retrieves the value of the size member of the LinkedList class. The getSize() function contains one statement that simply returns the value of the size member
Sandhya.Kishan
- May 8th, 2012
The getsize() function retrieves the value of the size member of the linked list class.
The LinkedList class is defined in the _______ package.
Skill/Topic: Stacks and Queues: Insert, Delete, Peek, FindA) java.util
Why is it important to enhance the functionality of the LinkedList class?
Skill/Topic: Stacks and Queues: Insert, Delete, Peek, FindA) You enhance the functionality of LinkedList class to more easily manipulate a linked list
Sandhya.Kishan
- May 19th, 2012
To increase the efficiency of the linkedliss class and to allow easy manipulations on the linked list we should enhance the functionality of the class.
The insertNodeAt() function can place a node at the front or back of a linked list if you pass the appropriate index to this function.
Skill/Topic: Stacks and Queues: Insert, Delete, Peek, FindA) TrueB) False
Renuka Nagambika Nagambika Puvvadi
- Aug 19th, 2021
True
Sandhya.Kishan
- May 15th, 2012
True,insertnodeat() function specifies the index where to insert the new node in the linked list.
Can a linked list store data other than integers?
Skill/Topic: Stacks and Queues: Insert, Delete, Peek, FindA) YesB) NoExplanation: Integers are usually used, but you can modify the data type of the data in the definition of the node to change the kind of data stored in the linked list.
What happens if an invalid index value is passed to a function?
Skill/Topic: Stacks and Queues: Insert, Delete, Peek, FindA) If an invalid index is passed, the function terminates without further processing. [Explanation] Functions that use an index value always determine if the index passed to them is valid before using the index value . If an invalid index is received, the
Sandhya.Kishan
- Jul 25th, 2012
If the user passes in an invalid index, the program will cause an assertion error. While this is useful to indicate to the user that something went wrong, so they can deal with it as appropriate.
The appendNode() function appends the new node to the list along with the programmer specifing where to place the new node in the linked list.
Skill/Topic: Stacks and Queues: Insert, Delete, Peek, FindA) TrueB) FalseExplanation: The appendNode() function appends the new node to the list without requiring the programmer to specify where to place the new node in the linked list.
Sandhya.Kishan
- May 15th, 2012
No,the appendNode() function do append the new node at the programmers specified place instead it appends the new node at the tail of the linked list instead of head.If the likt is empty then it uses reference pointer to change the head pointer.
The insertNodeAt() function specifies the index of where to insert the new node into the linked list.
Skill/Topic: Stacks and Queues: Insert, Delete, Peek, FindA) TrueB) False
Sandhya.Kishan
- Apr 27th, 2012
True,the insertnodeat() function specifies the index of where to insert the new node into the linked list.
What is the return value of the findNode() function?
Skill/Topic: Stacks and Queues: Insert, Delete, Peek, FindA) The return value of the findNode() function is the index position of the node.
Sandhya.Kishan
- Apr 27th, 2012
The index position of the node is returned by the findnode() function.
DeleteNode() function requires the _____ of the data element of the node that is being removed.
Skill/Topic: Stacks and Queues: Insert, Delete, Peek, FindA) referenceB) valueC) declarationD) variable
Sandhya.Kishan
- Mar 26th, 2012
DeleteNode() function requires the value of data element of the node that is being removed.
Why does QueueLinkedList class inherit the LinkedList class?
Skill/Topic: Queues Using Linked ListsA) The QueueLinkedList class inherits the LinkedList class because the LinkedList class contains data members and function members that are necessary to manage the linked list that is used for the queue.
Sandhya.Kishan
- May 14th, 2012
True,as the linkedlist class contains the functions and data members which are used to manage the linked list which is used for the queues,hence queuelinkedlist class inherit the linkedlist class.
_______ form of access is used to add and remove nodes from a queue.
Skill/Topic: Queues Using Linked ListsA) FIFO , First In First Out
Sandhya.Kishan
- May 10th, 2012
Queues are first in first out form of data structures.In a FIFO data structure, the first element added to the queue will be the first one to be removed.
Which node is removed from the queue when the dequeue() member method is called?
Skill/Topic: Queues Using Linked ListsA) The node at the front of the queue is removed when the dequeue() member method is called.
Sandhya.Kishan
- May 10th, 2012
The dequeue() function is used to remove the node at the front and returns a value, this value is stored in an item.
In an array queue, data is stored in an _____ element.
Skill/Topic: Queues Using Linked ListsA) NodeB) linked listC) arrayD) constructorExplanation: In an array queue, data is stored in an array element. In a linked list queue, data is stored in a node of a linked list
Conceptually, a linked list queue is the same as a queue built using an array.
Skill/Topic: Queues Using Linked ListsA) TrueB) FalseExplanation: Conceptually, a linked list queue is the same as a queue built using an array. Both store data. Both place data at the front of the queue and remove data from the front of the queue
ptmich
- May 28th, 2012
A FIFO (first in, first out) structure means data is added to the back of the queue and removed from the front of the queue. A first in first out structure is equivalent to last in last out structure,...
Sandhya.Kishan
- May 15th, 2012
A queue built using array is same as a linked list queue because both insert the data in the front and delete the data from front of the queue,i.e,both follow fifo data structure.
The isEmpty () member function must determine if the stack is empty.
Skill/Topic: Stacks using Linked ListA) TrueB) FalseExplanation: The pop () member function must determine if the stack is empty
Sandhya.Kishan
- May 10th, 2012
False.
The pop() function determine whether the stack is empty or not by calling the isEmpty() member function..__________ file contains the actual stack application.
Skill/Topic: Stacks using Linked ListA) StackLinkedListDemo.cpp
Why is the destructor of the StackLinkedList class empty?
Skill/Topic: Stacks using Linked ListA) The destructor of the StackLinkedList class is empty because the destructor of the LinkedList class is called prior to the destructor of the StackLinkedList class. This is because the LinkedList class is inherited by the StackLinkedList class.
Sandhya.Kishan
- May 15th, 2012
The destructor of the LinkedList class is called before the destructor of the StackLinkedList class. The LinkedList class constructor deletes all memory that is associated with the nodes of the linked list. Therefore, the destructor of the StackLinkedList class is empty.
Why is the constructor of the StackLinkedList class empty?
Skill/Topic: Stacks using Linked ListA) The constructor of the StackLinkedList class is empty because the constructor of the LinkedList class is called when an instance of the StackLinkedList class is declared. The constructor of the LinkedList class initializes the node and attributes that are
Sandhya.Kishan
- May 15th, 2012
The constructor is empty because the constructor of the LinkedList class is called before the constructor of the StackLinkedList class,we know that the StackLinkedList class inherits the LinkedList cl...
How is the front of the queue calculated ?
Skill/Topic: QueueA) The front of the queue is calculated by front = (front+1) % size
What is the formula used to calculate the back of the queue?
Skill/Topic: QueueA) The back of the queue is calculated by using the following formula:back = (back+1) % size
Sandhya.Kishan
- Mar 26th, 2012
Back = (back+1) % size is the formula to calculate the back of the queue.
How do you code error handling in QTP ?
Sandhya.Kishan
- Apr 2nd, 2012
There are 3 error handling statements 1. On Error GoTo line:It use a subroutine to handle error output. 2. On Error Resume Next: Specifies that when a run-time error occurs, control goes to the statem...
What is the Repeater function...and What does Data Integrity means?
Sandhya.Kishan
- Mar 17th, 2012
The correctness and consistency of stored data is known as integrity of data.
which swing components are synchronized?
Sandhya.Kishan
- Jul 13th, 2012
The repaint(), revalidate(), and invalidate() methods are synchronised.
How does Windows NT supports Multitasking?
Sandhya.Kishan
- Jul 11th, 2012
Windows NT supports multitasking with the help of preemptive multitasking which is based on preemptive operating system. The operating system takes control of the processor from a task in two ways: W...
peter
- Nov 1st, 2005
Preemptive multitask
What is an assembly?
bharati
- Sep 26th, 2012
An assembly is a collection of one or more .exe or .dll s. An assembly is the fundamental unit of application development and deployment for .net framework. It is a collection of types and resources that are built to work together and form a logical unit of functionality.DQ
Sandhya.Kishan
- Jul 17th, 2012
An assembly is a collection of types and resources which are built to work together and form a logical unit of functionality.It provides common language runtime information depending on the type implementations.
How does an AppDomain get created?
Sandhya.Kishan
- Jul 17th, 2012
When a managed application is initialised by the .NET runtime an appdomain is created.
Maryam
- Aug 18th, 2006
AppDomain is created by the .Net worker Process(aspnet_wp.exe).
What is asp.net?
Sandhya.Kishan
- Jul 17th, 2012
ASP.NET is a programming framework used to create enterprise-class Web Applications.Every element in an ASP.NET page is treated as an object and run on the server.
Nirupa.A
- Aug 30th, 2005
ASP.NET is the latest version of Microsoft's Active Server Pages technology (ASP). ASP.NET is a part of the Microsoft .NET framework, and a powerful tool for creating dynamic and interactive web pages
what is report header and what are the information contains.
It display general scenario information and it contain the information like (title, scenario, result start time, end time and duration).
Sandhya.Kishan
- Jun 7th, 2012
Every report has a report header that prints at the beginning of the report.It contains information about report title, a summary table, a chart or any information that only needs to appear once at the reports start.
what is report viewer .
Each report viewer contain the report header and report viewer tool bar.
Sandhya.Kishan
- Jun 5th, 2012
Report viewer is a report which contains report viewer tool bar and report header.
how to run a scenario.
Open an existing scenario . Configure the scenario. Set the result directory. Run the scenario.
Sandhya.Kishan
- Jun 7th, 2012
Steps to run a scenario
Step 1:Open the sample scenario in the Editor
Step 2:Select a Display Device and Display Mode
Step 3:Select a Response Button
Step 4:Set the Report Option
Step 5:Run the Scenariohow to modify the script.
Using vuser script information dialog box.
what is script list.
It contain all the vuser script that vuser can run.
during run time where the hosts saves the files.
In temporally in the local drive of each host.
Sandhya.Kishan
- Jun 5th, 2012
During run time the hosts saves the files temporally in the local drive of each host.
what is scenario wizard .
Through scenario wizard we can create a new scenario.
what is load runner API function .
Data base vuser do not operate client application .using load runner API function the database vuser can access the data from the server.
Sandhya.Kishan
- Jun 5th, 2012
With the help of loadrunner API function the data in the server can be made accessible to the database users.
One dollar is saved in one month. Then how much dollar is saved in one day?
1/30 =0.0333$
We should not read after a write to a file without an intervening call to fflush(), fseek() or rewind() < TRUE/FALSE>
True
Sandhya.Kishan
- Mar 28th, 2012
True, we should not be able to read a file after writing in that file without calling the given functions because if the file was open for writing and IF the last operation was an output operation, th...
What is the output? int i=7 printf("%dn",i++*i++);
Bhavana Vutla
- Sep 26th, 2019
56n
sushila sonare
- Jun 30th, 2017
I++*i++ where i=7
post increment in this first use the value the update the variable
so first keep i=7 then increment its now i=8, this new value use by right is as use value, after its increment as 9
so expression is 7*8= 56 and after this instruction i value is 9.Area of triangle=1/2*b*h, base is increased by 4 times & height is divided by 2, the net effect of area.
twice the original area
pdp
- Jan 17th, 2014
A=12*b*h{actual formula}
12*4b*h2=bh .i,e its doubledSandhya.Kishan
- Mar 31st, 2012
Area=1/2*b*h
Now b=4b and h=h/2
Hence new area=1/2*4b*h/2
=b*h
Hence the area is double the original area.confine: prisoner::
detain: suspect. APTITUDE
poltergeist: apparition:: A. dwarf: stature B. witch: familiar C. ogre: monster D. sorcerer: spell
C
Sandhya.Kishan
- Apr 12th, 2012
Poltergeist:apparition::ogre:monster
because poltergeist and apparition have same meaning similarly ogre and monster have the same meaning.While facts are ________ and data hard to come by, even scientists occasionally throw side the professional pretense of ______ and tear into each other with shameless appeals to authority and arguments that shameless appeals to authority and arguments that are unabashedly ad hominem A. elusive; objectivity B. establish; courtesy C. demonstrate; neutrality D. ineluctable; cooperation
A
Deteriorate : improve APTITUDE
The following letters are assigned the codes like a=1, c=2, d=3, r=7, y=9, o=4, i=5, t=6, n=8 then the word dictionary is
3526548179
Find odd man out enroll: capitulate: enlist: conscript
capitulate
Sandhya.Kishan
- May 10th, 2012
Capitulate is the odd one out as it means to surrender under specified conditions where as all the other mean to involve in some armed forces.
Find odd man out - tautology : oncology : repetition : redundancy
Oncology
Sandhya.Kishan
- Mar 30th, 2012
Oncology is the odd one out because it is a diseased condition in humans.
Antonym of SAGE
fool
Antonym of anathematize
bless
Management don't need _______ person A. self-appointed B. recalcitrant C. culprit D. outspoken
B
Sandhya.Kishan
- Mar 30th, 2012
Management dont need recalcitrant persons, as they are hard to handel.
what is meant by Line Item dimension?
Sandhya.Kishan
- May 25th, 2012
Line item dimension is a concept where the dimension precisely contains one characteristic.The line item dimension does not create a dimension table, instead the role of dimension table is taken by the characteristics of the SID table
.Find the output of the following programint *p,*q;p=(int *)1000;q=(int *)2000;printf("%d",(q-p));
500
George
- Apr 3rd, 2018
2000-1000
Software that allows a personal computer to pretend as a computer terminal isa) terminal adapterb) bulletin boardc) modemd) terminal emulation
(d)
Sandhya.Kishan
- Mar 22nd, 2012
Terminal emulation is the software which allows personal computer to pretend as a computer terminal.
Line of Sight isa) Straight Lineb) Parabolicc) Tx & Rx should be visible to each otherd) none
C
Sandhya.Kishan
- Mar 21st, 2012
Tx and Rx should be visible because for proper transmission there should be a connection between the transmitter and receiver,hence Tx and Rx should be visible to each other.
Conditional results after execution of an instruction in a micro processor is stored ina) registerb) accumulatorc) flag registerd) flag register part of PSW(Program Status Word)
D
ghulam rabbani
- Nov 18th, 2012
C. flag register
Sandhya.Kishan
- Mar 29th, 2012
The conditional results after execution in an micro processor are stored in flag register which is a part of psw.
What is the maximum decimal number that can be accommodated in a byte.a) 128b) 256c) 255d) 512
C
Sandhya.Kishan
- Mar 21st, 2012
We know that 1 Byte=8Bits,Hence 2^8=256.
A bite can represent one of these 256 distinct values i.e,numbers between 0(min) to 255(max).
Hence the maximum decimal number accommodated in a byte is 255.What is a root page?
The opposite of a leaf page; it is the highest level index page. An index can contain only the one root page; all other index pages are associated to the root.
Sandhya.Kishan
- Jul 9th, 2012
The indexes of DB2 are represented using b-tree,the b-trees top page is called as the root page.The root page entries represent the upper range limits of the index and are referenced first in a search.
What is an asynchronous write?
. It is a write to disk that may occur before or long after a commit. The write is controlled by the buffer manager.
krsna
- Jun 7th, 2012
Asynchronous write is when the pages from bufferpool is written to disk by the page cleaners.
Sandhya.Kishan
- Apr 6th, 2012
Asynchronous write is a function where the the function call immediately returns after the operation was enqueued or if before this happens an error was encountered.This function is present in "aio.h"...
How does Db2 use multiple table indexes?
DB2 use the multiple indexes to satisfy multiple predicates in a SELECT statement that are joined by an AND or OR.
Sandhya.Kishan
- Jul 9th, 2012
By using the concept of list prefetch DB2 uses multiple index processing.I is used to satisfy multiple predicates in a select statement that are joined by an AND or OR.
What is the self-referencing constraint?
A31. The self-referencing constraint limits in a single table the changes to a primary key that the related foreign key defines. The foreign key in a self referencing table must specify the DELETE CASCADE rule.
Sandhya.Kishan
- Jul 9th, 2012
Self-referencing constraint makes the table both the parent and dependent table in the same referential constraint.
Here the table is created first and then the foreign key is defined to that table.What is lock contention?
To maintain the integrity of DB2 objects the DBD permits access to only on object at a time. Lock contention happens if several objects are required by contending application processes simultaneously.
Sandhya.Kishan
- Jul 9th, 2012
Lock contention are used for maintaining concurrency in the DB2® environment.There are several types of contention situations that degrade DB2 performance, including suspension, timeout, and deadlock.
Begin program-specific programming interface information.
What is context?
Sandhya.Kishan
- May 16th, 2012
Context is the virtual environment required to suspend a running software program.The concept of context assumes significance in the case of interruptible tasks, wherein upon being interrupted the processor saves the context and proceeds to serve the Interrupt service routine
What are the drivers available?
Sandhya.Kishan
- Jul 16th, 2012
The drivers avaliable in jdbc are
Type 1: JDBC-ODBC Bridge driver (Bridge)
Type 2: Native-API/partly Java driver (Native)
Type 3: AllJava/Net-protocol driver (Middleware)
Type 4: All Java/Native-protocol driver (Pure)What is SAX?
Sandhya.Kishan
- May 16th, 2012
SAX defines an abstract programmatic interface that models the XML information set (infoset) through a linear sequence of familiar method calls.They are used to develop standard for the events-based parsing of XML documents.
What is web.xml?
Sandhya.Kishan
- May 16th, 2012
The web.xml defines each servlet and JSP page within a Web Application. It enumerates enterprise beans referenced in the Web application. It also provides configuration and deployment information fo...
Is java dynamic typed language?
Sandhya.Kishan
- May 16th, 2012
Yes, java is dynamic typed language as it has a property of a language where type checks are performed mostly at run time.A program is dynamically typed if it uses at least one dynamically typed variable.
Implicit objects of jsp are available in destroy() method or not?
Sandhya.Kishan
- May 30th, 2012
No the implicit objects of JSP are not available in destroy() method. The destroy method is invoked by the container when a JSP page is about to be destroyed.It can be overridden by a page author to p...
What is a layered pane?
Sandhya.Kishan
- May 16th, 2012
LayeredPane is a container which allows switching between different sets of displayed components. Each set of components, called a page, is declared within the LayeredPane component and its possible t...
Can u read all elements from an array?
Sandhya.Kishan
- Jun 19th, 2012
Reading elements from an array depends on the type of data that we want to read from an array,if the array is a linked list or stack or a queue it is not possible to read all the elements but if the array is fo a prmitive data typr then it is possible to read all the elements,
If service method is used then doGet() and doPost() stand for what?
Sandhya.Kishan
- Jun 19th, 2012
We use doGet() when you want to intercept on HTTP GET requests.The servlet doGet() is used to preprocess a request.Ex:doing some business stuff before displaying the JSP page, such as gathering data f...
How to kill a thread?
Sandhya.Kishan
- Jun 19th, 2012
The Thread.stop() method can be used to kill a thread but it is unsafe and thus deprecated.
Other way would be to have a variable indicating if the thread should be stopped. Other threads may set the variable to make the thread stop. Then, the thread itself may clean up and stop.How can you change the primary scripting language for a page?
Specify <%@ LANGUAGE = Scripting language %>
How does the server identify and execute the server-side scripts within HTML code?
• Including the RUNAT=SERVER attribute in the < SCRIPT > tag • Use < % … % > server script delimiter
Sandhya.Kishan
- Jun 6th, 2012
The server identify and execute the server-side scripts within HTML code by using < % … % > server script delimiter and by including the RUNAT=SERVER attribute in the < SCRIPT > tag.
How can you disable the browser to view the code?
Writing codes within the <! -- //-- > Tag.
Sandhya.Kishan
- Jun 4th, 2012
To disable the browser from viewing the code we can hide menu bar, address bar and disable right-click, or by writing the code within
Give the comment Tags for the following:
VBScript : REM & ‘(apostrophe) JavaScript : // (single line comment) /* */ (Multi-line comments)
Sandhya.Kishan
- Jun 6th, 2012
In java script the comment tag are // is used as single line comment and/* ...... */ is used as multi line comment.
In vbscript we use apostrophe ( ) for commenting.What are the browsers that can access ASP pages?
• Internet Explorer (supports VBScript, JavaScript) • Netscape Communicator/ Navigator (supports only JavaScript, VBScript can be also added too)
Sandhya.Kishan
- Jun 6th, 2012
The browser that can access asp pages are Internet Explorer and Netscape Communicator.
How are scripts executed?
ASP provides scripting engines that execute the corresponding scripting languages on the server side. Scripts should be encoded within the <%…. %> Delimiters.
Sandhya.Kishan
- Jun 6th, 2012
The script which should be executed should be enclosed within the delimiters.Scripting engines are provided by asp which executes the corresponding scripting languages on the server side.
What is an .ASP file?
It is a Text File that contains the combination of the following: • Text • HTML tags • Script Commands
What are the collections of Application Object?
* Contents collection – contains all variables added via scripts in global.asa. * Static collection – contains the names of all objects added via the <OBJECT> tag in global.asa.
Sandhya.Kishan
- Jul 14th, 2012
The collections of application objects are:
1. Content application object which contains all the items appended to the application through a script command.
2. StaticObjects which contains all the objects appended to the application with the HTML < object > tag.What is HTML(Hypertext Markup Language)?
It’s a method by which web pages can be built and generally used for formatting and linking text.
Sandhya.Kishan
- Jun 4th, 2012
HTML is a computer language which is used for displaying web pages and other information that can be displayed in an web browser.It is a method by which we move around on the web by clicking on special text called hyperlinks, the hyperlinks are created with the help of HTML tags.
What are the advantages of using ASP?
• Minimizes network traffic by limiting the need for the browser and server to talk to each other • Makes for quicker loading time since HTML pages are only downloaded • Allows to run programs in languages that are not supported by the browser • Can provide the client with data that does not reside on the client’s machine • Provides improved security measures since the script cannot be viewed by the...
Sandhya.Kishan
- Jul 14th, 2012
1. It is used for interactive pages which are dynamically generated. 2. It provides server side scripting. 3. The page consists of HTML and scripting language code. 4. It is flexible and powerful comp...
What are the ASP Scripting Objects?
The Dictionary object, the FileSystemObject object, TextStream object.
Sandhya.Kishan
- Apr 16th, 2012
The ASP scripting objects are
*Folder object
*File object
*Drive object
*Dictionary object
*FileSystem object and
*TextStream object.What are Scripting Objects?
Objects that can enhance the application are known as the Scripting Objects.
Sandhya.Kishan
- Apr 16th, 2012
Scripting objects provide access to the functionality of the software components.These are the objects which are used for enhancing a certain application.
What are the properties used to control the expiration of the page?
• Expires – specifies the number of minutes before a page cached on a browser expires. • ExpiresAbsolute – sets the date and time at which a page cached on a browser expires.
Sandhya.Kishan
- Jul 5th, 2012
The properties used to control the expiration of the page are Expires and ExpiresAbsolute.
Naming constraints for a variable.
It can be up to 255 characters Must start with an alphabet Must not contain an embedded period or full-stop
Sandhya.Kishan
- Jul 5th, 2012
For naming constraint of a variable must always start with an alphabet without including any special character of full stop,it may contain up to 255 characters.
What is a variable?
Variable is a memory location through which the actual values are stored/retrieved. Its value can be changed.
Sandhya.Kishan
- Apr 9th, 2012
To store information we use variables.
A variable declared inside a procedure is created and destroyed every time a procedure is executed.
A variable declared outside can accessed and changed by any scrips in the ASP file.
There are two types namely session variales and application variables.What is RdExecDirect?
Bypasses the Creation of a stored procedure to execute the query. Does not apply to Oracle.
Sandhya.Kishan
- May 21st, 2012
RdExecdirect is a function which is used to bypass the creation of stored procedure. It bypassed the stored procedure to execute a query.
DSN Less Connection?
"Server=Oracle; Driver={Microsoft ODBC for Oracle};"
Sandhya.Kishan
- May 24th, 2012
A database connection can be done without using DNS and hence it is called as DNS less.In DNS less method we need to specify the information needed for the connection like database type, server / file...
What is DBFailError?
Rolls Back updates if any errors Occurs.
Sandhya.Kishan
- Apr 30th, 2012
It is a property which is used to roll back the updates when an error is encountered.
What is DBSqlPassThrough?
It will By Passing the Jet Query Processor.
Sandhya.Kishan
- May 18th, 2012
Dbsqlpassthrough is a method which helps in jet query processor to by pass.
What is FireHouse Cursors?
Forward Only Some time Updateable
Sandhya.Kishan
- Apr 30th, 2012
Firehouse cursor is the default cursor that allows only forward movement through the cursor. These cursors are up-datable sometimes.
What is Static Cursor?
In ADO Snap Shot is called so.
Sandhya.Kishan
- Apr 30th, 2012
A cursor which can move to any record in the record set is known as a static cursor They support forward and backward scrolling but they do not support updates. are either read-only or read/write.Stat...
Diff types of Lock Types?
RdConcurReadOnly 0 (Default) RdConcurLock 1 (Pessimistic Locking) RdConcurRowver 2 (Optimistic Lociking) RdConcurValues 3 RdConcurBatch 4
Sandhya.Kishan
- Jun 18th, 2012
Different types of lock types:
RdConcurReadOnly 0 (Default)
RdConcurLock 1 (Pessimistic Locking)
RdConcurRowver 2 (Optimistic Locking)
RdConcurValues 3
RdConcurBatch 4What are the record set types?
RdOpenFowardOnly 0 (Default used only for the read only purpose) RdOpenStatic 1 RdOpenDynamic 2 RdOpenKeySet 3 (Normally used for the live project)
Sandhya.Kishan
- Jun 18th, 2012
There are 4 types of recordsets
Dynamic recordsets
Keyset recordsets
Static Recordset
Forward only RecordsetSetting the Cursors.
Default Cursor – 0 ODBC Cursor (Client side) – 1 ServerSide Cursors (More Network traffic) - 2
Sandhya.Kishan
- May 23rd, 2012
Methods to set the cursor position: •positionCursorAfterLast() - Set cursor to after the last record. This method exists so Java™ programs can use the readPrevious() method to access records in th...
How to increase the Date corresponding with month,date,year?
DateSerial(year(Now),Month(Now)+1,1) Hour, min, sec, month, year, DateSerial, dateadd, datediff, weekday, datevalue, timeserial,timevalue.
What methods are used for DBGrid in unbound mode?
AddData, EditData, Readdata, WriteData.
Sandhya.Kishan
- May 14th, 2012
The methods used for dbgrid in unbound mode are
1.Readdata
2.Writedata
3.Adddata
4.Editdata.What is view Port?
The area under which the container provides the view of the ActiveX Document is known as a view port.
Sandhya.Kishan
- May 14th, 2012
The container provides an area of view to the ActiveX Document and this is known as a view port.
How to trap Data Base Error?
Dim x as RDOError X(0).Des X(1).Number
Sandhya.Kishan
- Jun 18th, 2012
To trap database error we can use PowerBuilder which has a built-in event to capture database errors: it is the DBERROR event in the datawindow.
To connect the Data Control with Back end What are all the properties to be set?
Data source Name, Record Source Name
Sandhya.Kishan
- May 24th, 2012
To connect the data control with back end we need to set data source name and record source name.
Handling Error in Calling chain. This will call the top most error where the error is handled.
Sandhya.Kishan
- Jun 18th, 2012
Handling error in calling chain is used to handle the error when we call the top most error.
What is Centralization Error Handling?
Writing function and calling it when error occurs.
Sandhya.Kishan
- May 24th, 2012
Centralization error handling is a process of adding a error handling code to an application which is used to handle same errors over and over. Hence we write few procedures that the error-handling code can call to handle common error situations.
What is Seek Method which type of record set is available this?
Only in DbOpenTables. Syntax: rs.index = "empno" rs.seek "=" , 10 If with our setting the rs.index then run time error will occur.
Sandhya.Kishan
- May 25th, 2012
We use seek method to the objects in the table.It enables us to change the Index property of the Table object to change the order of the Seek. For intensive searches, we may want to create a Table obj...
What are the different types of error?
Syntax Errors, Runtime , Logic.
Sandhya.Kishan
- May 23rd, 2012
Different types of errors are loading error, runtime error,logical errors,compilation error and syntax error.
Different type of Passing Value?
By value, By ref, Optional, Param Array. Note:- Optional keyword cannot be used while declaring arguments for a function using param array.
What is MAPI ?
Messaging Application programming Interface.
Sandhya.Kishan
- May 21st, 2012
MAPI stands for Messaging Application Programming Interface,they provides a consistent interface for multiple application programs to interact with multiple messaging systems across a variety of hardware platforms.
What are the Technologies for Accessing Database from Visual Basic?
DAO, Data Control, RDO, ODBCDIRECT, ADO, ODBC API , 0040.
Sandhya.Kishan
- May 21st, 2012
The technologies for accessing database from visual basic are
1.ADO
2.RDO
3.ODBC
4.ODBC control
5.Data control and
6.ODBC DIRECTHow can we call Stored procedure of Back End in RDO and ADO ?
In RDO – We can call using RDO Query Objects. In ADO – We can call using Command Objects.
Sandhya.Kishan
- May 24th, 2012
RDO used RDO query to call stored procedure of a back end where as ADO uses command objects
What are the locks available in Visual Basic?
Locking is the process by which a DBMS restricts access to a row in a multi-user environment 4 types of locks. They are 1. Batch Optimistic 2. Optimistic 3. Pessimistic 4. ReadOnly Operations in a relational database act on a complete set of rows. The set of rows returned by a SELECT statement consists of all the rows that satisfy the conditions in the WHERE clause of the statement. This complete set...
Sandhya.Kishan
- May 31st, 2012
The locks avaliable in Vb are
1.RdConcurReadOnly 0 (Default)
2.RdConcurLock 1 (Pessimistic Locking)
3.RdConcurRowver 2 (Optimistic Lociking)
4.RdConcurValues 3
5.RdConcurBatch 4Record set types and Number available in VB?
3. 1- Dynaset, 0 – Table, 2 – Snap Shot.
Sandhya.Kishan
- May 31st, 2012
There are 5 recordset type available in VB
1.Table-Type Recordset -0
2.Dynaset-Type Recordset -1
3.Snapshot-Type Recordset -2
4.Dynamic-Type Recordset -2
5.Forward only type Recordset -0What are two validate with Data Control?
Data_Validate, Data_Error.
What is Dataware Control?
Any control bound to Data Control. Ex:- Textbox, Check Box, Picture Box, Image Control, Label, List box, Combo Box, DB Combo,
What is ADO? What are its objects ?
ActiveX Data Object. ADO can access data from both flat files as well as the databases. I.e., It is encapsulation of DAO, RDO, and OLE that is why we call it as OLE-DB Technology. Objects are Connection, Record Set, Command, Parameter, field, Error, Property.
Sandhya.Kishan
- Jul 12th, 2012
ADO stands for Activex Data Object. It is a programming interface to access data in the database and can also access data present in web pages, spreadsheets and other types of documents.
ADO has three objects namely command, connection and record set objects.
What is difference between datagrid and flexgrid?
Datagrid – Editable. Flexigrid – Non-Editable. (Generally used for Read only purpose.)
Sandhya.Kishan
- Jul 12th, 2012
1. Full data binding is allowed in datagrid where as flexgrid supports read only binding. 2. Datagrid is large and do not allow merging cells where as flexgrid allows cell merging and it is smaller. 3...
How to change the Mouse Pointer?
Screen.MousePointer = VBHourGlass/VBNormal.
Manish
- Aug 5th, 2012
System.Windows.Forms.Cursor.Current = System.Windows.Forms.Cursors.WaitCursor
after doing some work
in default mode
System.Windows.Forms.Cursor.Current = System.Windows.Forms.Cursors.DefaultCan We create CGI scripts in VB?
Yes.
What is Parser Bug?
It is difficult to use database objects declared in a module from within a form.
Sandhya.Kishan
- May 25th, 2012
When a code is in the process of being translated by the compiler and there is an error in the coding such errors are called as parser bug.
What are the different types of Dialog Box?
Predefined, Custom, User Defined.
Sandhya.Kishan
- May 23rd, 2012
There are two kinds of dialog box namely simple and complex.
Simple dialog box includes information level and error level.
Complex dialog box includes model,modelless and movable levels.
What are the Style Properties of Combo Box?
Simple, Dropdown list – We can type and select. Dropdown Combo – Only Drop Down.
Sandhya.Kishan
- Jul 12th, 2012
The Combo Box style property has two integer values.
Style property 0 - here the Combo Box behaves as a drop-down Combo Box.
Style property 2 - here the Combo Box behaves as a list box.In project properties if we set Unattended what is it mean?
This cannot have user interface. This can be used for the COM creation.
Can us able to set Instancing properties like Singleuse, GlobalSingleuse to ActiveXDll?
No.
Sandhya.Kishan
- Jul 30th, 2012
No we cannot set instancing properties like singleuse, GLobalsingleuse to activexdll.
What are the scopes of the class?
Public, private, Friend
Private Dim x as integer. Valid ?
Private cannot be used in front of DIM.
Sandhya.Kishan
- May 25th, 2012
Private dim x as integer is not valid since private should not be used before dim.
What is Static Variable?
Its Scope will be available through out the life time.
Sandhya.Kishan
- Jun 27th, 2012
Static variables are classes variables not instance variables.The lifetime extends across the entire run of the program.These variables are instantiated only once for a class. These variables have a s...
What is the diff between the Create Object and Get object?
Create Object - To create an instance of an object. Get Object – To get the reference to an existing object.
Sandhya.Kishan
- May 25th, 2012
Create Object instantiates the object where as Get Object works only with existing instances of an object.
Why we use Treeview Control?
To list the hierarchical list of the node objects. Such of files and Directories.
Sandhya.Kishan
- May 28th, 2012
TreeView control is used to display a hierarchical (or nested, or recursive) collection of data in a tree of expandable nodes.
What are properties available in Clip Board?
No Properties Available. Only the methods they are SetText, GetText, Setdata(), Getformat(), Clear.
Sandhya.Kishan
- May 25th, 2012
The clip board supports methods and has no properties. It has SetText, GetText, Setdata(), Getformat(), Clear methods.
How many images can be placed in the image list?
64
How to declare Dll Procedure?
Declare function "<Function Name>" lib "<Lib Name>" Alias "<Alias Name>" (Arg, …..) as Return type.
Sandhya.Kishan
- May 21st, 2012
To declare a DLL procedure, you add a Declare statement to the Declarations section. 1.If the procedure returns a value, write the declare as a Function Example Declare Function publicname Lib "libn...
Different type of Instantiation?
Private – Only for the Specific Module. Public not creatable – Private & Public Multi Use - Variable we have to declare. Single Use – Not possible through dll. Global Multiuse – Have variable not Required to Declare. Global Single Use - Only for exe.
Sandhya.Kishan
- Jun 1st, 2012
Private -only for the Specific Module.
Multi Use - variable we have to declare.
Single Use -not possible through dll.
Global Multiuse -have variable not Required to Declare.
Global Single Use - Only for exe.Suppose from form1 to form2 object property settings will arise to ?
Invalid procedure call or argument (Run time error – 5)
Sandhya.Kishan
- Jun 27th, 2012
Form1 to form2 object property settings will arise to run time error or to an invalid argument.
What is control array and how many we can have it with in the form?
Group of control share the same name. Max 32, 767.
Sandhya.Kishan
- May 31st, 2012
Control array consists of a group of controls that share the same name type and the same event procedures.It is a single dimensional array and we can add or delete array elements at the run time.Contr...
Drag and Drop state numbers and functions?
State 0 – Source control is being dragged with the range of a target. 1 – Out of the range of a target. 2 – One position in the target to another.
Sandhya.Kishan
- Jun 27th, 2012
There are 3 states numbers drag and drop functions
State 0 – source control is being dragged with the range of a target.
State 1 – out of the range of a target.
State 2 – one position in the target to anotherWhat is the difference between Property Get, Set and Let?
Set – Value is assigned to ActiveX Object from the form. Let – Value is retried to ActiveX Object from the form. Get- Assigns the value of an expression to a variable or property.
Sandhya.Kishan
- Jun 1st, 2012
Get property is used to initialize value to a variable.
Set property is used to set a reference to a property using the ByRef.
let property is used to is used to set value to a property using the ByVal.
What is Friend Variable?
Scope sharable between projects.
ramanpreet ghai
- May 30th, 2012
Friend variables are the variables that can be accessed by any other class within the same project.But remember ,you cant access these variables outside the project in which they are declared.
Sandhya.Kishan
- May 28th, 2012
A friend variable is used to share the scope of variables between the projects.
Where will we give the option explicit keyword and for what?
In the general declarations section. To trap undeclared variables.
Sandhya.Kishan
- May 31st, 2012
We use explicit keyword to trap undeclared variables in the declaration section.
what is the diff. Between function and sub procedures
) Function will return value but a sub procedure wont return values…
Sandhya.Kishan
- May 31st, 2012
The difference between a function and sub procedure is 1.A function returns a value but the sub procedures do not return values. 2.We can call function by its name but we need to prefix a call keywor...
What is keyword used to compare to objects?
ISOperator – Returns Boolean.
Name some date function
Dateadd(), Datediff(), Datepart(), Cdate()
Sandhya.Kishan
- May 29th, 2012
1.DATE_FORMAT() -Format date as specified
2.DATE_SUB() -Subtract a time value (interval) from a date
3.DATEDIFF() -Subtract two dates
4.DATE_ADD() -Add time values (intervals) to a date valueWhat is the max size allowed for Extension in Visual Basic
Frm, bas, cls, res, vbx, ocx, frx, vbp, exe
Sandhya.Kishan
- Jun 27th, 2012
The extension allowed in vb are vbx, ocx, frx, vbp,Frm, bas, cls and res.
What is the max size allowed for Max Control Names length
255.
What is the max size allowed for Max label caption length.
2,048
What is the max size allowed for Msgbox Prompt and Input Box?
1024
Sandhya.Kishan
- May 29th, 2012
The max size allowed for message box prompt and input box is 1024 bytes.
What is the return type of Instr and Strcmp?
Instr – integer (Numeric position)Strcmp - integer ( if both the string are equal they result = 0) Strcmp (Str1, Str2, Comparetype) Comparing mode = 0 – Binary Comparing 1 – Textual Comparing
Sandhya.Kishan
- May 29th, 2012
Syntax of InStr InStr([start,]string1,string2[,compare]) The InStr function can return the following values: * If string1 is "" - InStr returns 0 * If string1 is Null - InStr returns Null * If stri...
what is a method?
a way of doing something, especially a systematic way; implies an orderly logical arrangement (usually in steps)
Sandhya.Kishan
- Mar 28th, 2012
A method is a subroutine to a class or it is a set of code referred by a name, these methods can be invoked or called at any part of the program to execute their set of codes.At runtime,methods have access to data stored in an instance of the class.A class can contain more than one methods.
Differentiate between a linker and linkage?
A linker converts an object code into an executable code by linking together the necessary build in functions. The form and place of declaration where the variable is declared in a program determine the linkage of variable.
Sandhya.Kishan
- Mar 28th, 2012
Linker are used to convert the object code to executable codes where as linkage to a variable determines the deceleration of the variables declared in the given program.
What is storage class and what are storage variable ?
A storage class is an attribute that changes the behavior of a variable. It controls the lifetime, scope and linkage.There are five types of storage classes 1)auto 2)static 3)extern 4)register 5)typedef
Sandhya.Kishan
- Mar 28th, 2012
Storage class are used to define the lifetime and scope of a function or available.There are four storage classes namely auto,static,register and extern storage classes. Storage variables are the vari...
Is it better to use malloc() or calloc()?
Both the malloc() and the calloc() functions are used to allocate dynamic memory. Each operates slightly different from the other. malloc() takes a size and returns a pointer to a chunk of memory at least that big: void *malloc( size_t size ); calloc() takes a number of elements, and the size of each, and returns a pointer to a chunk of memory at least big enough to hold them all: void *calloc(...
Sandhya.Kishan
- Mar 28th, 2012
Malloc() and calloc() are used to allocate memory blocks dynamically.malloc() is a bit faster since it does not initialize the allocated memory blocks to as it is done by calloc() function.Hence it is better to use malloc() then calloc().
What is indirection?
If you declare a variable, its name is a direct reference to its value. If you have a pointer to a variable, or any other object in memory, you have an indirect reference to its value.
Sandhya.Kishan
- Mar 28th, 2012
Indirection operator (denoted by *) is a unary operator which include pointer variables. It operates on a pointer variable,and returns a value equivalent to the value at the pointer address. Example:...
What are the Classification of clients?
Non-GUI clients - Two types are Non-GUI clients that do not need multi-tasking(Example: Automatic Teller Machines (ATM), Cell phone)Non-GUI clients that need multi-tasking (Example: ROBOTs)GUI clientsOOUI clients
Sandhya.Kishan
- May 1st, 2012
There are two types of clients
1.GUI clients
2.OOUI clients
In GUI clients we have
1.Non-GUI clients that do not need multitasking:Example:Automatic Teller Machines (ATM), Cell phone
2.Non-GUI clients that need multitasking:Example:RobotsWhat are the building blocks of Client/Server?
The clientThe server andMiddleware
Sandhya.Kishan
- Apr 25th, 2012
The building block of client/server computing are the client, the server and the middleware.
What are called Transactions?
The grouped SQL statements are called Transactions (or) A transaction is a collection of actions embused with ACID properties.
Sandhya.Kishan
- Apr 25th, 2012
Types of servers
1.Transaction server
2.object server
3.Web server
4.Database server
5.Application serverSandhya.Kishan
- Apr 25th, 2012
A transaction is a collection of actions along with ACID properties or it could be a group ed SQL statements to perform particular action.
What are the types of Servers?
File serversDatabase serversTransaction serversGroupware serversObject serversWeb servers
Sandhya.Kishan
- Apr 25th, 2012
Types of servers
1.Transaction server
2.object server
3.Web server
4.Database server
5.Application serverWhat is meant by Mix-and-match?
The ideal Client/Server software is independent of hardware and Operating System software platform. It should be able to mix-and-match client and server platforms.
Sandhya.Kishan
- Apr 25th, 2012
The client/server softwares which are ideal are independent of the hardware and operating system platforms.So the client and server platforms should be able to mix and match the platforms.
What is Gateway-to-Gateway protocol?
It is a protocol formerly used to exchange routing information between Internet core routers.
Sandhya.Kishan
- May 1st, 2012
Gateway-to-Gateway Protocol is similar to the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP).
It is a protocol used for routing datagrams between Internet gateways.Each GGP message has a field header that identifies the message type and the format of the remaining fields.What is IGP (Interior Gateway Protocol)?
It is any routing protocol used within an autonomous system.
Sandhya.Kishan
- May 1st, 2012
Within an autonomous system the interior gateway protocol (IGP) is used to exchange routing information.
There are two types of IGP
1.Distance-vector routing protocol
2.Link-state routing protocol.What is Mail Gateway?
It is a system that performs a protocol translation between different electronic mail delivery protocols.
Sandhya.Kishan
- May 1st, 2012
Mail gateway is a means which connect two or more electronic mail system and helps in transfer of message between them.During complex mapping and translation there is a store and forward scheme where ...
What is multicast routing?
Sending a message to a group is called multicasting, and its routing algorithm is called multicast routing.
Sandhya.Kishan
- May 1st, 2012
Sending one packet of message to several destinations is known as multicast routing and algorithm which defines its route is known as multicast routing algorithm.
What is virtual path?
Along any transmission path from a given source to a given destination, a group of virtual circuits can be grouped together into what is called path.
neha
- May 17th, 2012
Such a path is a path which virtual physically possible. The path from Source to Destination cover every Node. It makes virtual circuit.
Sandhya.Kishan
- May 1st, 2012
A bundle of virtual channels which share the same end point is known as virtual path.Each virtual path is identified by its unique virtual path identifier (VPI). All channels within a single path must...
What is virtual channel?
Virtual channel is normally a connection from one source to one destination, although multicast connections are also permitted. The other name for virtual channel is virtual circuit.
Sandhya.Kishan
- May 1st, 2012
A virtual channel defines a single point to point connection, identified by its virtual channel identifier.An individual channel can be uniquely identified by its virtual channel and virtual path numb...
Explain 5-4-3 rule?
In a Ethernet network, between any two points on the network, there can be no more than five network segments or four repeaters, and of those five segments only three of segments can be populated.
Sandhya.Kishan
- May 1st, 2012
5-4-3 rule is a guideline for Ethernet computer networks along with the number of repeaters and segments on shared-access. The rule says that in an network there can be no more than five network segme...
What is Beaconing?
The process that allows a network to self-repair networks problems. The stations on the network notify the other stations on the ring when they are not receiving the transmissions. Beaconing is used in Token ring and FDDI networks.
Sandhya.Kishan
- Apr 19th, 2012
Beaconing is a process which allows the network to render their network problems by them-selfToken ring and FDDI(Fibre Distributed Data Interface) networks make use of this process. It is also a sign...
What is terminal emulation, in which layer it comes?
Telnet is also called as terminal emulation. It belongs to application layer.
Rajnish
- Apr 30th, 2012
What is terminal server and how to work in a terminal server.
Sandhya.Kishan
- Apr 19th, 2012
Terminal emulation is the ability to make one computer terminal appear like some other terminal. Terminal emulation is used to give the users the ability to log on and get direct access to legacy pro...
Condition for deadlock occurrence?
Deadlock can arise if four conditions hold simultaneously.Mutual exclusion: only one process at a time can use a resource.Hold and wait: a process holding at least one resource is waiting to acquire additional resources held by other processes.No preemption: a resource can be released only voluntarily by the process holding it, after that process has completed its task.Circular wait: ...
Sandhya.Kishan
- Jun 1st, 2012
The condition for the occurrence of deadlocks are Mutual Exclusion: At least one resource must be non-shareable.[1] Only one process can use the resource at any given instant of time. Hold and Wait ...
What is starvation and aging?
Starvation: Starvation is a resource management problem where a process does not get the resources it needs for a long time because the resources are being allocated to other processes. Aging: Aging is a technique to avoid starvation in a scheduling system. It works by adding an aging factor to the priority of each request. The aging factor must increase the request’s priority as time passes and...
While running DOS on a PC, which command would be used to duplicate the entire diskette?
diskcopy Java Thread States
Sandhya.Kishan
- Apr 23rd, 2012
Diskcopy command is used to duplicate the diskette,while running DOS on PC.
What is Context Switch?
Switching the CPU to another process requires saving the state of the old process and loading the saved state for the new process. This task is known as a context switch.Context-switch time is pure overhead, because the system does no useful work while switching. Its speed varies from machine to machine, depending on the memory speed, the number of registers which must be copied, the existed of special...
Sandhya.Kishan
- Apr 23rd, 2012
Context switching is a process of storing and restoring the state of the CPU So that the execution of the process can be resumed from the same point where it had been switched. There are 3 situations ...
Why paging is used?
Paging is solution to external fragmentation problem which is to permit the logical address space of a process to be noncontiguous, thus allowing a process to be allocating physical memory wherever the latter is available.
Sandhya.Kishan
- Apr 23rd, 2012
Paging is a process of dividing the memory into equal sized logical blocks.When any page is required the operating system searches for that page in the secondary memory and copies that page to the mai...
Differentiate between Complier and Interpreter?
An interpreter reads one instruction at a time and carries out the actions implied by that instruction. It does not perform any translation. But a compiler translates the entire instructions.
Sandhya.Kishan
- Apr 23rd, 2012
The compiler converts a high level language instruction into into machine language where as an interpreter converts the high level instruction into some intermediate form and after that, the instructi...
What information that the ServletResponse interface gives the servlet methods for replying to the client?
It Allows the servlet to set the content length and MIME type of the reply. Provides an output stream, ServletOutputStream and a Writer through which the servlet can send the reply data.
Sandhya.Kishan
- Jun 22nd, 2012
The information of buffer size, content length, content type and locale is provided to the client by the servletresponse interface.
What is the servlet life cycle?
Each servlet has the same life cycle:A server loads and initializes the servlet (init())The servlet handles zero or more client requests (service())The server removes the servlet (destroy()) (some servers do this step only when they shut down)
Sandhya.Kishan
- Jun 22nd, 2012
Every servlet follows the same cycle
*The servlet is initialized by calling the init () method.
*The servlet calls service() method to process a clients request.
*The servlet is terminated by calling the destroy() method.
*Finally, servlet is garbage collected by the garbage collector of the JVM.
What class allows you to read objects directly from a stream?
The ObjectInputStream class supports the reading of objects from input streams.
Sandhya.Kishan
- Jul 24th, 2012
The class that allows to read objects directly from a stream is the Objectinputstream class.
What are the disadvantages of using threads?
DeadLock.
Sandhya.Kishan
- May 22nd, 2012
The disadvantage of thread is that in may result in the starvation because of race conditions and deadlocks.
How do you estimate staff requirements?
Sandhya.Kishan
- Mar 13th, 2012
We estimate staff requirements based on client requirements, size of project, number of modules etc.
Define Query Interface,Adref,Release
Sandhya.Kishan
- Apr 9th, 2012
QueryInterface is used for determining if a known component supports a specific interface.It is a mechanism in COM (microsofts Component Object Model).It uses the current interface pointer ( IUnknown)...
The three file types in NT ? NTFS,Macintosh(HPFS), FAT
yasindiwan
- Jun 6th, 2013
32fat
In DHTML what is the difference between FontSize and Font Size ?? A: FontSize is a property, Font Size is a style
Sandhya.Kishan
- Apr 9th, 2012
Font Size is the attribute of font tag in dhtml where as Fontsize is the property of font styles.
What are the three Ado objects?? --Connection,command, recordset
Sandhya.Kishan
- Apr 9th, 2012
The objects of ADO are 1.connection object-It is used for ADOs connection to a data store via OLE DB. 2.command object-It helps in sending SQL queries to the provider through the CommandText property,...
The three types of DAO Dynaset,Snapshot,Table
Sandhya.Kishan
- Apr 9th, 2012
The DAO types are
1.dynaset-type recordset,which results through a query.
2.table-type recordsets, it represents a table in a .MDB database.
3.Snapshot-type recordset,comprises of a static copy of a set of records.How can you tell what kind of object an object variable is holding?
Sandhya.Kishan
- Jun 21st, 2012
We declare an object variable to hold the object.For example, a word processing application may provide an Application object, a Document object, and a Toolbar object.
What third party ActiveX controls have you used?
Sandhya.Kishan
- Jul 30th, 2012
The third party activex controls used are MSDataGrid, MSChart, MSCalendar.
What types of data access have you used.?
What is the difference between Msgbox Statement and MsgboxQ function?
Sandhya.Kishan
- Jun 21st, 2012
Msgbox statement is used to display messages where as a Msgboxq function display a message and return a value when any button in the MsgBox is pressed.
MsgBox is a built in VB function which is used as a statement and MsgBoxQ is a function defined by the user.
What does the Implements statement do?
Sandhya.Kishan
- May 29th, 2012
Implement statement specifies an interface or class that will be implemented in the class module in which it appears.It separates the interface of an object from its implementation, so that multiple implementations of the interface can be developed.
Types of system controls, container objects, combo box?
Sandhya.Kishan
- Jul 30th, 2012
Types of system controls 1.General controls a)Software controls b)Hardware controls c)Computer operations control d)data security control e)Administrator control 2.Application controls ...
Kind of components can be used as DCOM servers?
ActiveX and Types of ActiveX Components in VB?
Sandhya.Kishan
- Jul 12th, 2012
An ActiveX is a component programming object that can be re-used by many application programs within a computer or among computers in a network.
Types of activex components are
1.Activex control
2.Activex exe
3.Activex dll.
What are the types of API Types.
Sandhya.Kishan
- Apr 28th, 2012
There are three types of API types namely constants,types and declares.
How to get Cursor position using API?
Sandhya.Kishan
- Apr 28th, 2012
GetcursorPos() is the function used to get the cursor position using API.
What are the tools available for Debuggiu in VB?
Sandhya.Kishan
- Jun 21st, 2012
The tools available for debugging in vb
1.Immediate Window
2.Debug.Print
3.Debug.Assert
4.Break Points
5.single step modeWhat is the use of Active Control Property?
Sandhya.Kishan
- Apr 28th, 2012
Active control property is used to indicate which control has the focus at run time along with one of its properties or methods. Example Set ctlCurrentControl = Screen.ActiveControl Here the active co...
How can you read content from file?
Sandhya.Kishan
- Apr 26th, 2012
The below code can be used to read the contents of a file
BufferedReader br = new BufferedReader(new FileReader(filename));
Which method is used to write context Into file?
Using which type we can access file line by line?
How can you get selected file from file system Control?
Sandhya.Kishan
- Apr 28th, 2012
GetSelectedFiles() function is used to get selected file system control.
What do you mean by provider?
Sandhya.Kishan
- Apr 26th, 2012
Data Providers provide access to a particular data source. Each Data Provider exposes a set of objects that are use to manage connections, retrieve data, and update data.
Is there any Edit method in ADO Data Access method?
Sandhya.Kishan
- Jul 30th, 2012
There are no edit methods in ADO data access method instead recordset.update is used.
Is it possible to call backend procedures with ADO control?
Sandhya.Kishan
- Jul 12th, 2012
If the backend procedures are stored procedures then it is possible to call those procedures with ADO control.
Which type of object requires this object?
Sandhya.Kishan
- Jul 30th, 2012
"This" object is used inside any method to refer to the current object. It is always a reference to the object on which the method was invoked
What is the use of parameters collection?
Sandhya.Kishan
- Jul 23rd, 2012
Each Parameter object present in the parameter collection provides a detailed information about a single parameter used in a stored procedure or a parameterized query as the parameter collection is a collection of Parameter
objects associated with a specific Command object.Through which protocol OLEDB components are interfaced?
Sandhya.Kishan
- Apr 28th, 2012
OLEDB itself is a protocol which is a standard programming interface for data access between an application and a database server.
What are the important components of OLEDB?
Sandhya.Kishan
- May 18th, 2012
The important components of OLEDB are data provider and data consumer. An OLEDB data provider responds to OLEDB calls resulting in data being returned in a usable tabular format. A data consumer is an application that uses the OLEDB API to access a data source.
What are the Internet tools available in VB6.0?
Sandhya.Kishan
- Jul 12th, 2012
Internet tools avaliable in VB6.0 are DNS lookup, SMTP e-mail, Trace Rout, Port Listener, Port Scanner etc.
How can you Navigate from the DHTML application to another DHTML application? .
Sandhya.Kishan
- May 18th, 2012
We can navigate from the dHTML application to another dHTML application using hyperlinks and it can also be done programatically.
DHTML Is used for what?
Sandhya.Kishan
- Apr 6th, 2012
Dynamic HTML is used as it give more control over the HTML elements and allows them to change at any time, without returning to the Web server.
Whether HTML supports multimedia: and document links?
How would you find out the value property in Slider Bar Control?
Sandhya.Kishan
- May 18th, 2012
We use MsgBox Slider1.Value to find the value property in slider bar control.
How would you activate animation control?
How would you add column headers in listview control?
Sandhya.Kishan
- Apr 26th, 2012
A column header is an item in a ListView control. ColumnHeader objects can be added to a ListView using the Add method of the ListView.ColumnHeaderCollection class.
To add a group of columns to a ListView, you can use the AddRange method of the
ListView.ColumnHeaderCollection class.
What are the uses of List View Control?
Sandhya.Kishan
- Apr 6th, 2012
List view control is used to display all the records in the database table, it displays the results of a query on a database and it also helps to give users an expanded view of a TreeView control node.
How would you attach pictures in Treeview Control?
Sandhya.Kishan
- Apr 26th, 2012
We can attach picture in treeview either by using the propedit image(imread) function call which loads an Image into the ImageList or by using loadpicture() function.
What is the-use of property page Wizard in ActiveX Control?
Sandhya.Kishan
- Jul 30th, 2012
To create one or more property pages for the control then we make use of property page wizard in activex control.
How would you attach an ActiveX control in Your Application?
Sandhya.Kishan
- Jul 12th, 2012
We can attach an activex control using
BOOL Attach(
BSTR PortName // name of the virtual serial port
);
Here PortName is the name of the existing virtual serial port to be opened.
How would you cre.ate your application in DHTML?
Sandhya.Kishan
- Apr 14th, 2012
An application in DHTML is created by a combination of and compiled visual basic code in an interactive, browser-based application.The application resides at the browser machine and it responds to the...
How would you view html code in Active Server Pages?
Sandhya.Kishan
- Apr 26th, 2012
An ASP page is an HTML page that contains server-side scripts that are processed by the Web server before being sent to the users browser.
We can view the HTML code either by clicking Source on the View menu or by right-clicking the Web page, and then clicking View Source.How would you run your ActiveX Document Dll?
Sandhya.Kishan
- Apr 26th, 2012
Some steps involved in running an ActiveX document are 1.Run the project by pressing F5. The project is now running. If Windows Explorer is used to view the directory where Visual Basic resides, the...
What is Internet Explorer and its uses?
Sourabh Vijay Bandiwadekar
- Nov 4th, 2017
Internet Explorer is a Web browser that is used to open web pages
Sandhya.Kishan
- Jul 12th, 2012
Internet Explorer is the most widely used world wide web,which is used to communicate and compete with different web browsers.It is bundled with the Microsoft Windows operating system.
Uses of IE
1.Surfing the net
2.Downloading better browsers.What is ActiveX Document?
Sandhya.Kishan
- Apr 6th, 2012
ActiveX document allows an application to use the full capabilities of server applications.It is also known as Document Objects, it is an extension to Microsofts OLE compound document architecture.
Name four methods every Java class will have.
public String toString();public Object clone();public boolean equals();public int hashCode();
Sandhya.Kishan
- Jun 11th, 2012
Every Java class will have
1.public String toString();
2.public Object clone();
3.public boolean equals();
4.public int hashCode();Does Java have destructors?
No garbage collector does the job working in the background
Sandhya.Kishan
- May 22nd, 2012
Java does not support destructors, since java supports the concept of garbage collection,hence the garbage collector is used to automatically free the space which has occupied by the program while run...
Q: Why are Java ARchive (JAR) files important?
JAR files bundle .class files and optimize applet downloads.
Sandhya.Kishan
- Jul 30th, 2012
Jar files are important as it contains the class, image, and sound files for a Java application or applet gathered into a single file and possibly compressed. When a programmer gets a Java program dev...
Q: What is it object serialization ?
Serialization is a way to convert objects (including complex data structures such as lists and trees) into a stream of bytes.
Sandhya.Kishan
- Jun 11th, 2012
Serialization is a process of conversion of an object to a series of bytes.Such that the object can be stored easily in the persistent memory.The byte stream can then be deserialised i.e,converted into a replica of the original object.
What is the List interface
The List interface provides support for ordered collections of objects.
Sandhya.Kishan
- May 22nd, 2012
List interface extends collection interface.List interface is used for positional access,search,iteration and for range view operations.
Which Component subclass is used for drawing and painting
Canvas
What methods are used to get and set the text label displayed by a Buttonobject
getLabel() and setLabel()
Sandhya.Kishan
- Jul 24th, 2012
The methods used to get and set the text label are GetLabel() and SetLabel() methods.
What method must be implemented by all threads
All tasks must implement the run() method, whether they are a subclass of Thread orimplement theRunnable interface.
When is an object subject to garbage collection
An object is subject to garbage collection when it becomes unreachable to the program inwhich it is used.
Sandhya.Kishan
- May 24th, 2012
When an object becomes unreachable to the program in which it is being used then an object subjects to the garbage collection.
Can an unreachable object become reachable again
An unreachable object may become reachable again. This can happen when the object'sfinalize() method isinvoked and the object performs an operation which causes it to become accessible toreachable objects.
What modifiers may be used with a top-level class
A top-level class may be public, abstract, or final.
What is the purpose of a statement block
A statement block is used to organize a sequence of statements as a single statementgroup.
Sandhya.Kishan
- May 19th, 2012
Statements that are of a sequence are organized as a single statement group with the help of statement block.
To what value is a variable of the boolean type automatically initialized
The default value of the boolean type is false.
Sandhya.Kishan
- May 19th, 2012
A Boolean type is automatically initialized to value 0 or false value.
What is the difference between a public and a non-public class
A public class may be accessed outside of its package. A non-public class may not beaccessed outside ofits package.
Sandhya.Kishan
- Jul 31st, 2012
We can access a public class out of its package where as the access outside the package is not possible with a non public class.
What is the difference between a Scrollbar and a ScrollPane
A Scrollbar is a Component, but not a Container. A ScrollPane is a Container. AScrollPane handles itsown events and performs its own scrolling.
Sandhya.Kishan
- May 24th, 2012
*A scroll-bar is a component. *A scroll bar provides a convenient means for allowing a user to select from a range of values. *Scroll-bars can either be vertical or horizontal. *It has multiples compo...
What is the ResourceBundle class
The ResourceBundle class is used to store locale-specific resources that can be loaded bya program totailor the program's appearance to the particular locale in which it is being run.
Sandhya.Kishan
- Jun 15th, 2012
ResourceBundle is a set of related subclasses that share the same base name.It can be used instead of the Properties class. It is useful when developing applications for different languages,the Resour...
What are three ways in which a thread can enter the waiting state
A thread can enter the waiting state by invoking its sleep() method, by blocking on I/O,by unsuccessfullyattempting to acquire an object's lock, or by invoking an object's wait() method. It canalso enter thewaiting state by invoking its (deprecated) suspend() method.
Sandhya.Kishan
- Jun 15th, 2012
The thread can enter its waiting state by
1.invoking its sleep() method
2.By invoking its suspend() method
3.When an i/o block occurs.Which arithmetic operations can result in the throwing of anArithmeticException
Integer / and % can result in the throwing of an ArithmeticException.
What is a layout manager
A layout manager is an object that is used to organize components in a container.
Sandhya.Kishan
- May 19th, 2012
Layout managers are software components which have the ability to lay out widgets by their relative positions without using distance units.It is an object that implements the LayoutManager interface* and determines the size and position of the components within a container.
What happens if an exception is not caught
An uncaught exception results in the uncaughtException() method of the thread'sThreadGroup beinginvoked, which eventually results in the termination of the program in which it is thrown.
Sandhya.Kishan
- Jun 23rd, 2012
If the exception is not caught by any of the method in the method’s stack , then the main method throws that exception and the JVM halts its execution.
How can a dead thread be restarted
A dead thread cannot be restarted.
Sandhya.Kishan
- May 19th, 2012
A thread once dead cannot be restarted. The thread is said to be dead only after it completes its execution with the expected results hence dead thread cannot be restarted.
What interface is extended by AWT event listeners
All AWT event listeners extend the java.util.EventListener interface.
Sandhya.Kishan
- May 22nd, 2012
Java.util.EventListener interface is extented by all AWT event listeners.
What is a compilation unit
A compilation unit is a Java source code file.
Sandhya.Kishan
- Jun 7th, 2012
The source code file for a Java class is called a compilation unit. Normally a compilation unit contains a single class definition and it is named for that class.
What is the purpose of garbage collection
The purpose of garbage collection is to identify and discard objects that are no longerneeded by a programso that their resources may be reclaimed and reused.
Sandhya.Kishan
- Jun 15th, 2012
The purpose of garbage collection is to remove the unused variables/objects (value is null) from the memory,so that their resources can be reclaimed and reused by other programs.
How are this and super used
this is used to refer to the current object instance. super is used to refer to the variablesand methods of thesuperclass of the current object instance.
Sandhya.Kishan
- Jun 23rd, 2012
This() is used to refer the class scope variables. and method scope variables and it is used to invoke a constructor of the same class.
super() is used to refer super-class member and subclass member and it invoke a super-class constructor.What interface must an object implement before it can be written to a streamas an object
An object must implement the Serializable or Externalizable interface before it can bewritten to a stream asan object.
Sandhya.Kishan
- Jun 11th, 2012
Externalizable and serializable interfaces must be implemented by an object before it is written to the stream as an object.
Which package is always imported by default
The java.lang package is always imported by default.
Sandhya.Kishan
- Jun 7th, 2012
The java,lang package is imported by default as it includes all other packages.
What happens when you add a double value to a String
The result is a String object.
Sandhya.Kishan
- May 26th, 2012
When we add a double value to a string then the resulting value is a string object.
What is a void return type
A void return type indicates that a method does not return a value.
Sandhya.Kishan
- May 26th, 2012
If a function does not return any value then it is of void return type.
Are true and false keywords
The values true and false are not keywords.
Sandhya.Kishan
- May 22nd, 2012
No true and false are not keywords but they can only be the return types of a boolean data type.
What are E and PI
E is the base of the natural logarithm and PI is mathematical value pi.
Sandhya.Kishan
- Jun 2nd, 2012
E and Pi are mathematical constants where E stands foe natural logarithm and PI stands for a value equal to 3.17
What classes of exceptions may be thrown by a throw statement
A throw statement may throw any expression that may be assigned to the Throwabletype.
What is the Set interface
The Set interface provides methods for accessing the elements of a finite mathematicalset. Sets do notallow duplicate elements.
Sandhya.Kishan
- Jun 12th, 2012
The Set interface extends the Collection interface.It contains only methods inherited from Collection interface,some methods are: 1.add( )-Adds an object to the collection. 2.clear( )-Removes all obj...
If an object is garbage collected, can it become reachable again
Once an object is garbage collected, it ceases to exist. It can no longer become reachableagain.
Sandhya.Kishan
- May 22nd, 2012
An object reaches the garbage collection once it becomes unreachable and it cannot become reachable again.
What an I/O filter
An I/O filter is an object that reads from one stream and writes to another, usuallyaltering the data in someway as it is passed from one stream to another.
Sandhya.Kishan
- Jul 31st, 2012
To read from one stream and then to write on other stream we use i/o filter.
How are the elements of a GridLayout organized
The elements of a GridBad layout are of equal size and are laid out using the squares of agrid.
Sandhya.Kishan
- Jun 4th, 2012
The elements of a gridlayout are organized depending on the size and equal size are laid out using the squares of a grid.
What are the legal operands of the instanceof operator
The left operand is an object reference or null value and the right operand is a class,interface, or array type.
Sandhya.Kishan
- Jul 23rd, 2012
The legal operands of instance of operator are
1. Left operand which is an object reference.
2. Right operand which can be a class or an interface.
What state is a thread in when it is executing
An executing thread is in the running state.
What Checkbox method allows you to tell if a Checkbox is checked
getState()
Why are the methods of the Math class static
So they can be invoked as if they are a mathematical code library.
Sandhya.Kishan
- Jun 1st, 2012
Math class contains methods used for mathematical calculations since they do not depend on instance data to perform their job and hence they are static.
What is the relationship between a method's throws clause and the exceptionsthat can bethrown during the method's execution
A method's throws clause must declare any checked exceptions that are not caught withinthe body of themethod.
Sandhya.Kishan
- Jul 31st, 2012
Any checked exceptions that are not caught within the body of the method must declare in a methods throws clause.
How are this() and super() used with constructors
this() is used to invoke a constructor of the same class. super() is used to invoke asuperclass constructor.
Sandhya.Kishan
- Jun 1st, 2012
If we want to execute the constructor before executing the functionality of a method then we use this() constructor.This()refers the current constructor. When we want to invoke the constructor of the...
Under what conditions is an object's finalize() method invoked by the garbagecollector
The garbage collector invokes an object's finalize() method when it detects that the objecthas becomeunreachable.
Sandhya.Kishan
- Jun 11th, 2012
When an object has no references then it reaches its unreachable condition and under this condition the finalize() method is invoked by the garbage collector.
What is the difference between a field variable and a local variable
A field variable is a variable that is declared as a member of a class. A local variable is avariable that isdeclared local to a method.
Sandhya.Kishan
- Jun 1st, 2012
1.A field variable is a variable which is declared as a member of a class where as a local variable is declared in a method which belongs to a class. 2.Field variables are alive as long as the instanc...
What class allows you to read objects directly from a stream
The ObjectInputStream class supports the reading of objects from input streams.
Sandhya.Kishan
- May 30th, 2012
The class allows to read objects directly from a stream is the ObjectInputStream class.
What class of exceptions are generated by the Java run-time system
The Java runtime system generates RuntimeException and Error exceptions.
Sandhya.Kishan
- May 30th, 2012
Error exceptions and run time exceptions are generated by the Java run-time system.
What is the difference between a Choice and a List
A Choice is displayed in a compact form that requires you to pull it down to see the listof availablechoices. Only one item may be selected from a Choice. A List may be displayed in such away that severalList items are visible. A List supports the selection of one or more List items.
Anurag yadav
- Oct 9th, 2019
Choice and list awt
Sandhya.Kishan
- Jun 11th, 2012
Choice contains a list of items and we can only select one item from a choice.
List is used to display several items and we can select more than one item from a list.Name four Container classes
Window, Frame, Dialog, FileDialog, Panel, Applet, or ScrollPane
What is the return type of a program's main() method
A program's main() method has a void return type.
What restrictions are placed on method overloading
Two methods may not have the same name and argument list but different return types.
Sandhya.Kishan
- May 30th, 2012
In method overloading
1.methods should have the same name.
2.The methods may or may not have return type and the return type may or may not be the same.
The signature should be different.Which non-Unicode letter characters may be used as the first character of anidentifier
The non-Unicode letter characters $ and _ may appear as the first character of anidentifier
Sandhya.Kishan
- May 30th, 2012
Ampersand "$" is the non-unicode letter characters which can be used as the first character of an identifier.
How can the Checkbox class be used to create a radio button
By associating Checkbox objects with a CheckboxGroup.
Sandhya.Kishan
- May 30th, 2012
Checkbox objects can be associated with a CheckboxGroup such that the checkbox class can be used to create a radio button.
If a method is declared as protected, where may the method be accessed
A protected method may only be accessed by classes or interfaces of the same package orby subclasses ofthe class in which it is declared.
Sandhya.Kishan
- Jul 25th, 2012
The classes or interfaces in which the method is declared can access the protected method.It can also be access within a class through member function and outside a class through public interface.
Which class is the immediate superclass of the Container class
Component
Sandhya.Kishan
- May 30th, 2012
The immediate super class of the container class is java.awt.Compnoent
When is the finally clause of a try-catch-finally statement executed
The finally clause of the try-catch-finally statement is always executed unless the threadof executionterminates or an exception occurs within the execution of the finally clause.
Sandhya.Kishan
- Jul 31st, 2012
The finally clause of a try-catch-finally statement executed when the thread of execution terminates or an exception occurs within the execution of the finally clause.
Which Math method is used to calculate the absolute value of a number
The abs() method is used to calculate absolute values.
Sandhya.Kishan
- May 16th, 2012
The math method used to calculate the absolute value of a number is abs() method.
Can an exception be rethrown
Yes, an exception can be rethrown.
Sandhya.Kishan
- May 16th, 2012
An exception can be rethrown by using keyword throw.
Example:
try {
// code here that throws an Exception
}
catch (Throwable t) {
throw t; // (re)throw it in their face
}What is the purpose of the File class
The File class is used to create objects that provide access to the files and directories of alocal file system.
Sandhya.Kishan
- May 16th, 2012
File class is used to provide methods to perform some basic file-system operations such as checking the
file length,create/remove folders etc.File class is used to read and write data to and from files.It provides access to directories of local file system with the help of objects created.What is the difference between the paint() and repaint() methods
The paint() method supports painting via a Graphics object. The repaint() method is usedto cause paint() tobe invoked by the AWT painting thread.
Sandhya.Kishan
- Jul 31st, 2012
Whenever the window needs to be refreshed the paint() method is called automatically.The user does not specify the paint(). The user specifies the repaint() in order to obtain a rendering.repaint() i...
What modifiers can be used with a local inner class
A local inner class may be final or abstract.
Sandhya.Kishan
- Jul 23rd, 2012
The public,private, abstract, final, protected, strictfp and static modifiers can be used with a local inner class.
What is the Collection interface
The Collection interface provides support for the implementation of a mathematical bag -an unorderedcollection of objects that may contain duplicates.
Sandhya.Kishan
- Jul 31st, 2012
The Collection interface is used to pass around collections of objects where maximum generality is desired.It is one of the root interfaces of the Java collection classes.It provides support for the implementation of an unordered collection of objects that may contain duplicates.
What event results from the clicking of a button
The ActionEvent event is generated as the result of the clicking of a button.
What is the highest-level event class of the event-delegation model
The java.util.EventObject class is the highest-level class in the event-delegation classhierarchy.
Sandhya.Kishan
- Jun 2nd, 2012
Java.util.Eventobject is the highest level event class of the event delegation model.
Is a class a subclass of itself
A class is a subclass of itself.
What modifiers may be used with an interface declaration
An interface may be declared as public or abstract.
Sandhya.Kishan
- Jul 23rd, 2012
The public and abstract modifiers can be used with an interface declaration.
What restrictions are placed on the values of each case of a switch statement
During compilation, the values of each case of a switch statement must evaluate to avalue that can bepromoted to an int value.
Sandhya.Kishan
- Jul 31st, 2012
1.The compiler does not initialize auto and register variables at the beginning of a switch body where as we can put data definitions at the beginning of the switch body.
2.We cannot use a switch statement to jump over initializations.What is the relationship between clipping and repainting
When a window is repainted by the AWT painting thread, it sets the clipping regions tothe area of thewindow that requires repainting.
Sandhya.Kishan
- Jul 31st, 2012
Clipping regions are set to the repinted window on the area that requires repainting.When a window is repainted by the AWT painting thread, it sets the clipping regions tothe area of the window that requires repainting.
Is &&= a valid Java operator
No, it is not.
How are the elements of a CardLayout organized
The elements of a CardLayout are stacked, one on top of the other, like a deck of cards.
Which TextComponent method is used to set a TextComponent to the readonlystate
setEditable()
Sandhya.Kishan
- May 17th, 2012
The text component method which is used to set a textcomponent to the read only state is setEditable() method.
For which statements does it make sense to use a label
The only statements for which it makes sense to use a label are those statements that canenclose a break orcontinue statement.
Sandhya.Kishan
- Jul 21st, 2012
For statements which are enclosed by a break or a continue statement makes sense to use a label statement.
What is the Map interface
The Map interface replaces the JDK 1.1 Dictionary class and is used associate keys withvalues.
Sandhya.Kishan
- May 17th, 2012
Map interface represents a mapping between a key and a value without duplicate keys.The maps contents are viewed as a set of keys, collection of values, or set of key-value mappings. Map permits null ...
What is the SimpleTimeZone class
The SimpleTimeZone class provides support for a Gregorian calendar.
Sandhya.Kishan
- May 17th, 2012
The concrete subclass of TimeZone that represents a time zone which is use support the Gregorian calendar is called as a simple time zone class.Historical changes are not handled by this class.
What classes of exceptions may be caught by a catch clause
A catch clause can catch any exception that may be assigned to the Throwable type. Thisincludes the Errorand Exception types.
Sandhya.Kishan
- Jul 21st, 2012
An exception which may be assigned to the Throwable type including the Error and Exception types are caught by catch clause.
What happens when a thread cannot acquire a lock on an object
If a thread attempts to execute a synchronized method or synchronized statement and isunable to acquirean object's lock, it enters the waiting state until the lock becomes available.
Sandhya.Kishan
- Jul 26th, 2012
When a thread cannot acquire a lock on an object thread enters the waiting state until the lock becomes available .
How is rounding performed under integer division
The fractional part of the result is truncated. This is known as rounding toward zero.
Sandhya.Kishan
- Jul 25th, 2012
By truncating the fractional part of the result we are rounding the result and this is called as rounding towards zero.
What is the difference between the Font and FontMetrics classes
The FontMetrics class is used to define implementation-specific properties, such asascent and descent, of aFont object.
Sandhya.Kishan
- Jul 24th, 2012
The Font class maps the characters of the language to their respective glyphs.
The FontMetrics provides access to attributes of Fontobjects, things such as char width, char height, which help in drawing the fonts on the screen.Can an object be garbage collected while it is still reachable
A reachable object cannot be garbage collected. Only unreachable objects may begarbage collected..
Sandhya.Kishan
- Jun 14th, 2012
No, reachable object cannot be garbage collection ,only when the object becomes unreachable in gets collected in garbage collector.
Which class is extended by all other classes
The Object class is extended by all other classes.
Sandhya.Kishan
- Jun 2nd, 2012
The object class is the super class of each and every class and henae it is extended by all other classes.
What is the difference between a Window and a Frame
The Frame class extends Window to define a main application window that can have amenu bar.
Sandhya.Kishan
- Jul 26th, 2012
A window is a Container and has BorderLayout by default.
A frame is a movable window with title bar and close button,usually it contains Panels. Its derived from a window.
Frame can be part of the window but window can not part of frame.When can an object reference be cast to an interface reference
An object reference be cast to an interface reference when the object implements thereferenced interface.
Sandhya.Kishan
- Jul 25th, 2012
When an object implements the referenced interface then the object reference be cast to an interface reference.
What is the % operator
It is referred to as the modulo or remainder operator. It returns the remainder of dividingthe first operandby the second operand.
Sandhya.Kishan
- Apr 23rd, 2012
It is a reminder operator.
if r = x % y, then a non-negative q exist, such that
x = q*y + r.
How are the elements of a BorderLayout organized
The elements of a BorderLayout are organized at the borders (North, South, East, andWest) and the centerof a container.
Sandhya.Kishan
- Jun 2nd, 2012
The elements of a borderlayout are organized in the center and at the borders of the container.
If a variable is declared as private, where may the variable be accessed
A private variable may only be accessed within the class in which it is declared.
Anonymous
- Jun 7th, 2012
I understand your question to be pertaining to private variables w/in a class and not local variables (i.e. variables declared w/in a method). That said, a private variable may be accessed by constru...
Sandhya.Kishan
- Jun 2nd, 2012
The private variables can be accessed only in the block in which they have been declared.
What is the difference between a static and a non-static inner class
A non-static inner class may have object instances that are associated with instances ofthe class's outerclass. A static inner class does not have any object instances.
Sandhya.Kishan
- Jul 25th, 2012
A static inner class need to be referred by the class name being it is static. A static inner class can have access even to the private members of the outer class. The non-static inner class has the ...
What value does read() return when it has reached the end of a file
The read() method returns -1 when it has reached the end of a file.
What are the high-level thread states
The high-level thread states are ready, running, waiting, and dead.
Sandhya.Kishan
- Apr 18th, 2012
The high level states of a thread are ready state,running state,waiting state and dead state.
What is the relationship between the Canvas class and the Graphics class
A Canvas object provides access to a Graphics object via its paint() method.
Sandhya.Kishan
- Apr 23rd, 2012
The graphics class object can be accessed by the paint() method which is provided by the canvas class object.
What is an abstract method
An abstract method is a method whose implementation is deferred to a subclass.
Sandhya.Kishan
- Apr 18th, 2012
A method which has method declaration and definition but no method body is known as an abstract method i.e it is a method without any implementation(without braces, and followed by a semicolon),
abstract void add(int X, int Y);
How are commas used in the initialization and iteration parts of a for statement
Commas are used to separate multiple statements within the initialization and iterationparts of a forstatement.
Sandhya.Kishan
- Jul 24th, 2012
The multiple statements with in the initialization and in the iteration parts are separated using commas.
Which containers may have a MenuBar
Frame
Name two subclasses of the TextComponent class
TextField and TextArea
What method is invoked to cause an object to begin executing as a separatethread
The start() method of the Thread class is invoked to cause an object to begin executing asa separate thread.
Sandhya.Kishan
- Jun 2nd, 2012
To cause an object to begin executing as a separate thread we should invoke the start() method present in the thread class.
What must a class do to implement an interface
It must provide all of the methods in the interface and identify the interface in itsimplements clause.
Sandhya.Kishan
- Jul 23rd, 2012
A class should provides the definition to all the methods declared in the interface to implement an interface.
Can a double value be cast to a byte
Yes, a double value can be cast to a byte.
Sandhya.Kishan
- May 11th, 2012
Any data type can be typecasted to any other data type and hence we can type cast a double value to a byte.
What is the Locale class
The Locale class is used to tailor program output to the conventions of a particulargeographic, political, orcultural region.
pon suresh
- Oct 6th, 2012
What is object class in java?
prabakaran29
- Aug 19th, 2012
The locale class to used to tailor program output to the conventions of a particular geographic, political, or cultural region
Which Java operator is right associative
The = operator is right associative.
What is the purpose of the finally clause of a try-catch-finally statement
The finally clause is used to provide the capability to execute code no matter whether ornot an exception isthrown or caught.
Sandhya.Kishan
- Jul 24th, 2012
The purpose is that,when an exception is caught during program execution,code written in finally clause will be executed ,irrespective of what type of error has occurred.
How many times may an object's finalize() method be invoked by the garbagecollector
An object's finalize() method may only be invoked once by the garbage collector.
Sandhya.Kishan
- Apr 20th, 2012
Only once the garbage collector can invoke the objects finalize() method.
What is the purpose of the Runtime class
The purpose of the Runtime class is to provide access to the Java runtime system.
Sandhya.Kishan
- Jun 2nd, 2012
The runtime class provides access to the java runtime system, it provides runtime information – memory availability, invoking the garbage collector.It provides facilities such as Reading data through key board,Running non-java programs from within a java application etc.
Which Container method is used to cause a container to be laid out andredisplayed
validate()
Sandhya.Kishan
- Apr 20th, 2012
The Validate() method is used to cause a container to be laid out anderdisplay.
What is the GregorianCalendar class
The GregorianCalendar provides support for traditional Western calendars.
Sandhya.Kishan
- Apr 24th, 2012
The GregorianCalendar class is a standard calendar which is supported by java.It contains constructors like GregorianCalendar() representing the moment it was created, the GregorianCalendar(int year, ...
Name three subclasses of the Component class
Box.Filler, Button, Canvas, Checkbox, Choice, Container, Label, List, Scrollbar, orTextComponent
Sandhya.Kishan
- Apr 14th, 2012
The three subclasses of component classes are Canvas class,panel class and applet class.
What invokes a thread's run() method
After a thread is started, via its start() method or that of the Thread class, the JVMinvokes the thread'srun() method when the thread is initially executed.
Sandhya.Kishan
- May 11th, 2012
A thread starts its process by invoking the start() method, this start() method invokes the run() method.
Which class is the immediate superclass of the MenuComponent class
Object
What is the purpose of finalization
The purpose of finalization is to give an unreachable object the opportunity to performany cleanupprocessing before the object is garbage collected.
Sandhya.Kishan
- Jul 24th, 2012
The purpose of finalization is to provide opportunity to an object which is unreachable to perform any cleanup process . This activity is done before the object is garbage collected.Finalization is used to invoke finalized() method
What is the immediate superclass of Menu
MenuItem
What is the range of the char type
The range of the char type is 0 to 2^16 - 1.
sunny
- Apr 22nd, 2012
In java char define with 2 byte not 1 byte i. e. 0 to 65536
Sandhya.Kishan
- Apr 14th, 2012
The char data type ranges from –128 to 127 and it requires 1 byte to store a particular character.
What is the range of the short type
The range of the short type is -(2^15) to 2^15 - 1.
Sandhya.Kishan
- Apr 14th, 2012
The range of short data type is –32,768 to 32,767 and it uses 2 bytes to store a particular value or a number.
Can an anonymous class be declared as implementing an interface andextending a class
An anonymous class may implement an interface or extend a superclass, but may not bedeclared to doboth.
Sandhya.Kishan
- May 11th, 2012
An anonymous class simultaneously cannot be declared as implementing an interface and extending a class but it may implement an interface or extend a superclass.
When a thread is created and started, what is its initial state
A thread is in the ready state after it has been created and started.
What class is the top of the AWT event hierarchy
The java.awt.AWTEvent class is the highest-level class in the AWT event-classhierarchy.
Sandhya.Kishan
- Apr 14th, 2012
The AWT event hierarchy is
java.lang.object ----> java.util.Eventobject ----> java.awt.AWTevent ----> java.awt.event.Hierarchyevent.What is the catch or declare rule for method declarations
If a checked exception may be thrown within the body of a method, the method musteither catch theexception or declare it in its throws clause.
Sandhya.Kishan
- Jul 26th, 2012
The catch or declare rule states that if a checked exception is be thrown within the body of a method, the method must either catch the exception or declare it in its throws clause.
To what value is a variable of the String type automatically initialized
The default value of an String type is null.
Sandhya.Kishan
- Apr 20th, 2012
Null value is the default value to which the string type is automatically initilised.
When a thread blocks on I/O, what state does it enter
A thread enters the waiting state when it blocks on I/O.
Sandhya.Kishan
- Apr 14th, 2012
The thread enters a blocked state when it is blocked on i/o,and hence it waits for the resources which is held by other thread and then it enters the running state where the thread gets executed.
Can a for statement loop indefinitely
Yes, a for statement can loop indefinitely. For example, consider the following:for(;;) ;
Sandhya.Kishan
- Apr 24th, 2012
For(i=0::)
{
}
Tis is an example where the for loop runs indefinitely.What is clipping
Clipping is the process of confining paint operations to a limited area or shape.
Sandhya.Kishan
- Apr 24th, 2012
Confining the areas of paint to a limited shape and size is known as clipping.
What is the immediate superclass of the Dialog class
Window
What value does readLine() return when it has reached the end of a file
The readLine() method returns null when it has reached the end of a file.
Sandhya.Kishan
- May 4th, 2012
The readline() method returns null when it reaches the end of the line.
Name three Component subclasses that support painting
The Canvas, Frame, Panel, and Applet classes support painting.
Sandhya.Kishan
- Apr 28th, 2012
Canvas class, frame class and applet class are the subclasses that support painting.
What is the immediate superclass of the Applet class
Panel
Can an object's finalize() method be invoked while it is reachable
An object's finalize() method cannot be invoked by the garbage collector while the objectis still reachable.However, an object's finalize() method may be invoked by other objects.
Sandhya.Kishan
- Jun 19th, 2012
The reachable objects cannot be garbage collected and hence an objects finalize() method cannot be invoked while it is reachable.
What restrictions are placed on the location of a package statement within asource code file
A package statement must appear as the first line in a source code file (excluding blanklines andcomments).
Sandhya.Kishan
- Jun 2nd, 2012
The restriction on the location of the package statement is that it should appear as the first line with in a source code file.
Does garbage collection guarantee that a program will not run out of memory
Garbage collection does not guarantee that a program will not run out of memory. It ispossible forprograms to use up memory resources faster than they are garbage collected. It is alsopossible forprograms to create objects that are not subject to garbage collection
Sandhya.Kishan
- Jul 26th, 2012
The garbage collection is JVM dependent then It is possible for programs to use memory resources faster than they are garbage collected.Moreover garbage collection cannot be enforced,it is just sugges...
What are wrapped classes
Wrapped classes are classes that allow primitive types to be accessed as objects.
Sandhya.Kishan
- Apr 24th, 2012
Wrapped class is a private class defined with other class.The values once assigned in this class cannot be changed.It converts value of one data typr to other data type.
Is sizeof a keyword
The sizeof operator is not a keyword.
Sandhya.Kishan
- Apr 13th, 2012
Sizeof is not a keyword but it is an unary operator which is used to calculate the size of datatype, which is measured in terms of bytes.
Which java.util classes and interfaces support event handling
The EventObject class and the EventListener interface support event processing.
Nandhitha S
- May 3rd, 2012
Import java.awt.event.*;
Sandhya.Kishan
- Apr 28th, 2012
EventObject class and the EventListener interface support event handling in Java.Util class.
Which method of the Component class is used to set the position and size of acomponent
setBounds()
Sandhya.Kishan
- Apr 13th, 2012
The method which is used to set position and size of a component is setBound() method present in the component class.
What is the difference between the >> and >>> operators
The >> operator carries the sign bit when shifting right. The >>> zero-fills bits that havebeen shifted out.
Sandhya.Kishan
- Apr 13th, 2012
>> and >>> are both shifting operators.
>> shifting operator carries the sign when a number is being shifted right.
>>> shifting operator fills the spaces with zero for a number which is been shifted right.What is an Iterator interface
The Iterator interface is used to step through the elements of a Collection.
Sandhya.Kishan
- Apr 10th, 2012
The Iterator interface lets you step through the objects that a collection contains.
What modifiers may be used with an inner class that is a member of an outerclass
A (non-local) inner class may be declared as public, protected, private, static, final, orabstract.
Sandhya.Kishan
- May 11th, 2012
Expect static modifier all other modifiers such public,private,protected,default,abstract and final modifiers can be used with inner class which is a member of an outer-class.
If the inner class contains the static modifier it results in compilation error.How does Java handle integer overflows and underflows
It uses those low order bytes of the result that can fit into the size of the type allowed bythe operation.
Sandhya.Kishan
- May 11th, 2012
Java do not handle integer overflow or underflow it just wraps round the value be adding 1 to the maximum values which returns the minimum value.
What is the List interface
The List interface provides support for ordered collections of objects.
Sandhya.Kishan
- Apr 7th, 2012
List is a collection of ordered sequence which may also contain duplicate elements. The elements in the list can be searched using elements integer index.
List interface provides access for four methods namely:
1.Positional access
2.Search
3.Iterations
4.Range-viewWhat state does a thread enter when it terminates its processing
When a thread terminates its processing, it enters the dead state.
Which containers use a FlowLayout as their default layout
The Panel and Applet classes use the FlowLayout as their default layout.
What method is used to specify a container's layout
The setLayout() method is used to specify a container's layout.
What is the preferred size of a component
The preferred size of a component is the minimum component size that will allow the component to display normally.
Sandhya.Kishan
- Apr 10th, 2012
The minimum size which is present for a component to display normally is known as preferred size.
Is null a keyword
The null value is not a keyword.
What's new with the stop(), suspend() and resume() methods in JDK 1.2
The stop(), suspend() and resume() methods have been deprecated in JDK 1.2.
Sandhya.Kishan
- May 8th, 2012
The stop(), suspend() and resume() methods are marked as obsolete to warn against its use in the future so that it may be phased out.
Why do threads block on I/O
Threads block on i/o (that is enters the waiting state) so that other threads may executewhile the i/oOperation is performed.
Sandhya.Kishan
- Apr 24th, 2012
While performing the i/o operation a thread is blocked and there by it allows the next thread in the queue to complete its execution.
which containers use a border Layout as their default layout
The window, Frame and Dialog classes use a border layout as their default layout.
Sandhya.Kishan
- Apr 24th, 2012
The border layout is used as default layout in Window, Frame and Dialog class containers.
What are the advantages of developing an n-tiered system
Sandhya.Kishan
- Mar 24th, 2012
Some advantages 1.N-Tier systems are useful as they allow a business to utilize any combination of software and hardware resources that they want or need it also allows to add on any components that...
What is meant by flickering
Sandhya.Kishan
- Apr 7th, 2012
The color desolution which occurs during executing images or graphics in a thread is called as flickering.
Have you used threads in Servlet
Prasad MN
- Dec 28th, 2012
We can implements SingleThreadModel in Servlets Class.
Code- import javax.servle*.;
- public class Simple implements SingleThreadModel
- {
- }
Sandhya.Kishan
- Jul 26th, 2012
Servlets dont run in their own threads. Instead, when a request comes in, the app server removes a thread from a master thread pool and uses it to drive the servlets service method. Once the service method has returned, the thread is returned to the thread pool.
What is meant by static query and dynamic query
Sandhya.Kishan
- Apr 7th, 2012
Static query are the queries which are targeted to a particular stored database and are usually stored in stored procedures.
Dynamic query are the queries which are targeted to the database structures which are dynamic in nature.How do you download stubs from a Remote place
Sandhya.Kishan
- Apr 13th, 2012
By using the URL values present in rmi registry in JAVA we can download stubs from a remote place.
What is the main functionality of the Remote Reference Layer
Sandhya.Kishan
- Apr 13th, 2012
Transport independent functioning of Remote Method Invocation(RMI) protocol is supported by the Remote Reference Layer(RRL) .
RRL acts as an interface between the skeleton layer and transport layer protocols.
Remote object references are created and managed by RRL.What is the middleware. What is the functionality of Webserver
Sandhya.Kishan
- Apr 13th, 2012
The software application which provided software services beyond the services provided by the operating system is known as middleware.Middleware makes it easier for software developers to perform comm...
What is client server computing
Sandhya.Kishan
- Apr 7th, 2012
Client-server computing is a computing where the server provides a service or a function to the clients which initiates the request for the services. It is a distributed computing model. The server is...
What are session variable in Servlets
Sandhya.Kishan
- Apr 7th, 2012
The variables which are used for set of requests or for a single site visit are known as session variables. eg:the users selection in a shopping cart application can be stored with the help of session variables.
There are two session variables namely getSession() and setAttribute().Write a program for recursive Traverse
Sandhya.Kishan
- Apr 7th, 2012
"c public void preorder( ) { if( root == null ) return; Stack stack = new Stack( ); stack.push( root ); while( ! stack.isEmpty( ) ) { Node current = st...
What are the traverses in Binary Tree
Sandhya.Kishan
- Apr 7th, 2012
There are three traversals in binary tree. They are:
1.Pre-order traversal
2.In-order traversal
3.Post-order traversalCan I modify an object in CORBA
What is the corresponding Layout for Card in Swing
Where the CardLayout is used
Sandhya.Kishan
- Apr 5th, 2012
Cardlayouts are used by the user to select the optional components that can by enabled or disabled.
How will you call an Applet using a Java Script function
Sandhya.Kishan
- Apr 13th, 2012
We can call an applet using "document.javaapplet_name.script" function.
How does thread synchronization occurs inside a monitor
Sandhya.Kishan
- Apr 13th, 2012
Thread synchronization can be done using synchronization class or the monitor itself acts as an object where single thread can be executed at a particular time and hence no other thread can enter the monitor.
What is the difference between File and RandomFileAccess classes
Sandhya.Kishan
- Apr 13th, 2012
The directories and files of local class of file system can be encapsulated using file class. In file class if we need to access some nth byte of the file then the file should be read from 0 byte to n...
What is the List interface
The List interface provides support for ordered collections of objects.
Sandhya.Kishan
- Apr 5th, 2012
The behavior of the collection of objects is indicated by a list interface.It is an extension of collection interface.It allows one or more and duplicate objects to be null.
What happens when you add a double value to a String
The result is a String object.
Sandhya.Kishan
- Apr 5th, 2012
The result of adding a double value to a string is a "string object" .
When we add double value to a string the value gets converted and it is appends to the original string and hence a new string object is created.Which Component subclass is used for drawing and painting
Canvas
What methods are used to get and set the text label displayed by a Button object
getLabel() and setLabel()
Sandhya.Kishan
- Mar 31st, 2012
To set the text label displayed by a Button object we use the method "button.setLabel(label).
To get the text label displayed by a Button object we use the method "button.getLabel().What method must be implemented by all threads
All tasks must implement the run() method, whether they are a subclass of Thread orimplement the Runnable interface.
When is an object subject to garbage collection
An object is subject to garbage collection when it becomes unreachable to the program inwhich it is used.
Sandhya.Kishan
- May 3rd, 2012
When an object becomes unreachable to any of the code then that object becomes eligible for garbage collection.
Once an object is garbage collected, It can no longer become reachable again.Can an unreachable object become reachable again
An unreachable object may become reachable again. This can happen when the object'sfinalize() method is invoked and the object performs an operation which causes it tobecome accessible to reachable objects.
What are the Object and Class classes used for
The Object class is the highest-level class in the Java class hierarchy. The Class class isused to represent the classes and interfaces that are loaded by a Java program..
Sandhya.Kishan
- Jun 14th, 2012
Object class is the super class of all the classes in java.It defines methods which are inherited by all other classes.
Class class defines the behaviours and functionality for the classes in java.It also represent the classes and
interfaces that are loaded by a Java program.
What is the purpose of a statement block
A statement block is used to organize a sequence of statements as a single statementgroup.
Sandhya.Kishan
- Mar 31st, 2012
Sequence of statements are organized as a single statement group with the help of statement block.
To what value is a variable of the boolean type automatically initialized
The default value of the boolean type is false.
Sandhya.Kishan
- May 3rd, 2012
Boolean type variable is always automatically initialized to false value.
What is the difference between a public and a non-public class
A public class may be accessed outside of its package. A non-public class may not beaccessed outside of its package.
Sandhya.Kishan
- Mar 31st, 2012
A public class will have access specifier "public" and its members can be accessed with in and out of the class in which they are specified. A class which doesnt have the public access specifier are c...
What is the ResourceBundle class
The ResourceBundle class is used to store locale-specific resources that can be loaded bya program to tailor the program's appearance to the particular locale in which it is beingrun.
Sandhya.Kishan
- Jun 14th, 2012
ResourceBundle is a set of related subclasses that share the same base name.It can be used instead of the Properties class. It is usefull when developing applications for different languages,the ResourceBundle class will find the correct properties file based on the current user locale.
Can an abstract class be final
An abstract class may not be declared as final.
Sandhya.Kishan
- May 4th, 2012
Abstract classes are the classes which can be subclassed but once if a class is declared as final we cant sub class
that so that as abstract class can never be final.What are three ways in which a thread can enter the waiting state
A thread can enter the waiting state by invoking its sleep() method, by blocking on I/O,by unsuccessfully attempting to acquire an object's lock, or by invoking an object's wait()method. It can also enter the waiting state by invoking its (deprecated) suspend() method.
Sandhya.Kishan
- Jul 14th, 2012
A thread can enter the waiting state by invoking wait() method, sleep() method and suspend() method.
What is a layout manager
A layout manager is an object that is used to organize components in a container.
Sandhya.Kishan
- May 3rd, 2012
The arrangement of the components in the container is determined by the layout manager.
Example:When we add a component to an applet or a container, the container uses its layout manager to decide where to put the component.What happens if an exception is not caught
An uncaught exception results in the uncaughtException() method of the thread'sThreadGroup being invoked, which eventually results in the termination of the programin which it is thrown.
Sandhya.Kishan
- Jul 14th, 2012
When an exception is not caught by any method then the main method throws an exception and results in the termination of that method.
What interface is extended by AWT event listeners
All AWT event listeners extend the java.util.EventListener interface.
What is a compilation unit
A compilation unit is a Java source code file.
Sandhya.Kishan
- May 3rd, 2012
The source code for a Java class is called a compilation unit. Normally a compilation unit contains a single class definition and it is named for that class.
What is the purpose of garbage collection
The purpose of garbage collection is to identify and discard objects that are no longerneeded by a program so that their resources may be reclaimed and reused.
sivapurammani
- Dec 17th, 2013
In simple terms we can say garbage collector removes the unreferenced objects from the memory. In general the memory should have some limitation. In JVM for accomplishing tasks we create objects and ...
pardeep131085
- Aug 21st, 2013
garbage collection is the process of looking at heap memory, identifying which objects are in use and which are not, and deleting the unused objects. An in use object, or a referenced object, means th...
How are this and super used
this is used to refer to the current object instance. super is used to refer to the variablesand methods of the superclass of the current object instance.
Sandhya.Kishan
- Jul 14th, 2012
Super() refers to the superclass of the class where the super keyword is currently being used.It is used to call the constructor of the superclass in the base class. eg: public class Class1{ public C...
What interface must an object implement before it can be written to astream as an object
An object must implement the Serializable or Externalizable interface before it can bewritten to a stream as an object.
Sandhya.Kishan
- May 3rd, 2012
An object must implement the Serializable or Externalizable interface before it can be written to a stream as an object.
As it is a mechanism with which we can save the state of an object by converting it to a byte stream.Which package is always imported by default
The java.lang package is always imported by default.
What happens when you add a double value to a String
The result is a String object.
Kevin Leonyx
- Mar 19th, 2015
What happens when we add a double to a string
Sandhya.Kishan
- Jul 14th, 2012
When we add double value to a string it returns a string representation of the double argument.
What is the purpose of the enableEvents() method
The enableEvents() method is used to enable an event for a particular object. Normally,an event is enabled when a listener is added to an object for a particular event. TheenableEvents() method is used by objects that handle events by overriding their eventdispatchmethods.
Sandhya.Kishan
- Jul 26th, 2012
The enableEvents() method is used by objects that handle events by overriding their event-dispatch methods.
What is a void return type
A void return type indicates that a method does not return a value.
Sandhya.Kishan
- May 7th, 2012
Void return type specifies that the particular function will not return any value.
What are E and PI
E is the base of the natural logarithm and PI is mathematical value pi.
Sandhya.Kishan
- Apr 3rd, 2012
"e" is a numerical constant that is equal to 2.71828.The value of "e" is found in many mathematical formulas such as those describing a nonlinear increase or decrease such as growth or decay."e" is us...
What classes of exceptions may be thrown by a throw statement
A throw statement may throw any expression that may be assigned to the Throwabletype.
Sandhya.Kishan
- Jul 24th, 2012
Exceptions which are assigned Throwable Type are thrown by a throw statement.
What is the Set interface
The Set interface provides methods for accessing the elements of a finite mathematicalset. Sets do not allow duplicate elements.
Sandhya.Kishan
- Apr 3rd, 2012
The Set interface contains only methods that are inherited from a Collection interface and does not allow the addition of duplicate elements.Two Set instances are equal if they contain the same elements.
If an object is garbage collected, can it become reachable again
Once an object is garbage collected, it ceases to exist. It can no longer become reachableagain.
Sandhya.Kishan
- May 7th, 2012
An object reaches the garbage collector as it becomes unreachable ,hence once an object is garbage collected it cannot be made reachable again.
What an I/O filter
An I/O filter is an object that reads from one stream and writes to another, usuallyaltering the data in some way as it is passed from one stream to another.
Sandhya.Kishan
- Apr 3rd, 2012
An object which is used to read from one stream and write those on other stream is known as an i/o filter.
What are the legal operands of the instanceof operator
The left operand is an object reference or null value and the right operand is a class,interface, or array type.
Digpal Singh Chouhan
- Apr 19th, 2013
The left operand is an object reference or null vale
the right operand is a cla,interface,or aaray typeSandhya.Kishan
- Jul 14th, 2012
The legal operands of instance of operator are
1. Left operand which is an object reference.
2. Right operand which can be a class or an interface.What state is a thread in when it is executing
An executing thread is in the running state.
What Checkbox method allows you to tell if a Checkbox is checked
getState()
Sandhya.Kishan
- May 7th, 2012
The method which is used to check whether the checkbox is checked or not is the getstate() method.
Under what conditions is an object's finalize() method invoked by the garbagecollector
The garbage collector invokes an object's finalize() method when it detects that the objecthas become unreachable.
Sandhya.Kishan
- May 7th, 2012
When an object becomes unreachable by any of the methods in a program then the finalize() method in invoked.
What class allows you to read objects directly from a stream
The ObjectInputStream class supports the reading of objects from input streams.
Sandhya.Kishan
- Apr 3rd, 2012
The ObjectInputStream class supports to read object directly from stream.
What class of exceptions are generated by the Java run-time system
The Java runtime system generates RuntimeException and Error exceptions.
What is the difference between a Choice and a List
A Choice is displayed in a compact form that requires you to pull it down to see the listof available choices. Only one item may be selected from a Choice. A List may bedisplayed in such a way that several List items are visible. A List supports the selectionof one or more List items.
Sandhya.Kishan
- Apr 3rd, 2012
Choice is an action of choosing or selection,it requires us to pull it down to see the list of available choices.Only one item can be choosen from the list of choices.
Several list items are visible in a list and more then one item can be selected using list.What happens when you invoke a thread's interrupt method while it issleeping or waiting
When a task's interrupt() method is executed, the task enters the ready state. The nexttime the task enters the running state, an InterruptedException is thrown.
Sandhya.Kishan
- Jul 14th, 2012
Java.lang.InterruptedException is called when we invoke a threads interrupt method while it is sleeping.
Which non-Unicode letter characters may be used as the first characterof an identifier
The non-Unicode letter characters $ and _ may appear as the first character of anidentifier
How can the Checkbox class be used to create a radio button
By associating Checkbox objects with a CheckboxGroup.
Sandhya.Kishan
- Apr 3rd, 2012
Radio Buttons are created by creating a Checkbox first hence it is followed by adding Radio Button in the Checkbox.
JRadioButton of swing class is used to create Radio Button.Which class is the immediate superclass of the Container class
Component
Which Math method is used to calculate the absolute value of a number
The abs() method is used to calculate absolute values.
Sandhya.Kishan
- Mar 24th, 2012
To returns the absolute value of a specified number we use the method abs(x).
Example:
int value1 = -1000;
int abs1 = Math.Abs(value1);
output will be 1000 which is an absolute value.
Can an exception be rethrown
Yes, an exception can be rethrown.
Sandhya.Kishan
- Mar 27th, 2012
Exceptions can be re-thrown.Rethrowing the exception is useful if we want to log the same exception, but not to handle it.
What is the purpose of the File class
The File class is used to create objects that provide access to the files and directories of alocal file system.
Sandhya.Kishan
- Mar 24th, 2012
File class is used to provide methods to perform some basic file-system operations such as checking the file length,
create/remove folders etc.File class is used to read and write data to and from files.It provides access to directories of local file system with the help of objects created.How can a GUI component handle its own events
A component can handle its own events by implementing the required event-listenerinterface and adding itself as its own event listener.
Sandhya.Kishan
- Apr 3rd, 2012
By implementing the required event listener interface a gui component can handle it own event.In order to keep a track of all events associated with it uses its own event listener.A program catches an...
What event results from the clicking of a button
The ActionEvent event is generated as the result of the clicking of a button.
What is the highest-level event class of the event-delegation model
The java.util.EventObject class is the highest-level class in the event-delegation classhierarchy.
Sandhya.Kishan
- Mar 29th, 2012
The highest level classof event delegation model is java.util.EventObject class because it contains all classes and interfaces that support all kinds of event handlings.
What is the relationship between clipping and repainting
When a window is repainted by the AWT painting thread, it sets the clipping regions tothe area of the window that requires repainting.
Sandhya.Kishan
- Mar 29th, 2012
Confining the paint operation to a particular ares or shape is done be a process called ad clipping.
On the request of repainting the clipped areas are set to repaint windows.How are the elements of a CardLayout organized
The elements of a CardLayout are stacked, one on top of the other, like a deck of cards.
Which TextComponent method is used to set a TextComponent to the read-onlystate
setEditable()
Sandhya.Kishan
- Apr 3rd, 2012
SetEditable() is the method used to set text component to read only status.
What is the purpose of the System class
The purpose of the System class is to provide access to system resources.
Sandhya.Kishan
- Mar 27th, 2012
The purpose is that it provide access to externally defined properties and environment variables.It is used to read the system properties.
By using this class we can read time, and date, current running process,current Runtime.
What is the SimpleTimeZone class
The SimpleTimeZone class provides support for a Gregorian calendar.
Sandhya.Kishan
- Mar 24th, 2012
Time zone that is use with a Gregorian calendar is a subclass of TimeZone which represented by SampleTimeZone class.By using the base time zone offset from GMT time zone ID and rules, for starting and ending the time of daylight we create SampleTimeZone class.
What is the difference between the Reader/Writer class hierarchy and theInputStream/OutputStream class hierarchy
The Reader/Writer class hierarchy is character-oriented, and theInputStream/OutputStream class hierarchy is byte-oriented.
Sandhya.Kishan
- May 7th, 2012
Character-oriented hierarchy is supported by reader/writer class where as byte-oriented hierarchy is supported by
InputStream/OutputStream class.What is the difference between the Font and FontMetrics classes
The FontMetrics class is used to define implementation-specific properties, such asascent and descent, of a Font object.
Sandhya.Kishan
- Mar 24th, 2012
Font class is used to set or retrieve the screen fonts.The Font class maps the characters of the language to their respective glyphs. The FontMetrics class defines a font metrics object, which encapsu...
Which class is extended by all other classes
The Object class is extended by all other classes.
Sandhya.Kishan
- Mar 24th, 2012
The object class is the super class of every class and it is extended by all the other classes.
What are the high-level thread states
The high-level thread states are ready, running, waiting, and dead.
Sandhya.Kishan
- Mar 27th, 2012
The thread states are 1.Ready state-This state signifies that the thread is ready for execution. 2.Running state-A thread in running state has access to the CPU i.e.,the thread is being executed. 3.Wa...
What is an abstract method
An abstract method is a method whose implementation is deferred to a subclass.
Sandhya.Kishan
- Mar 27th, 2012
Method which is define in the class without implementation is call as Abstract Method. Abstract Method must be define with abstract keywords.
What method is invoked to cause an object to begin executing as a separate thread
The start() method of the Thread class is invoked to cause an object to begin executing asa separate thread.
Sandhya.Kishan
- Jul 13th, 2012
The start() method is invoked to cause an object to begin executing as a separate thread.
Which Container method is used to cause a container to be laid out and redisplayed
validate()
Sandhya.Kishan
- Jul 13th, 2012
Validate() method is used to cause a container to be laid out and redisplayed in java programming.
What is the GregorianCalendar class
The GregorianCalendar provides support for traditional Western calendars.
Sandhya.Kishan
- Mar 27th, 2012
GregorianCalendar is a concrete implementation of a Calendar for Gregorian calendar.Traditional Western calendars are supported by the GregorianCalender.It has two standard eras BC and AD.Only the current era recognizes the implementation of this calender class.
