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What is the difference between exception and error
Answered by Scott on 2005-05-12 09:50:36: An Exception can be caught and recovered: ArrayIndexOutOfBoundsException means you tried to access a position of an Array that does not exist - no big deal. An Error is unrecoverable: OutOfMemoryError means that the JVM has no more memory to contin
utkarsh prashar
- Aug 16th, 2013
Exception are abnormal conditions and errors are the mistakes like syntax error or logical error.
sravani
- Jun 3rd, 2013
Exception is nothing but error but some difference whenever exception will raise program can execute continuously where as error program will not execute
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Java Program Execution
How does Java program compile and execute to give output?
manoj.arah
- Aug 20th, 2013
The Java platform consists of the Java application programming interfaces (APIs) and the Java 1 virtual machine (JVM). Java APIs are libraries of compiled code that you can use in your programs. They...
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What is the difference between static and non-static variables
A static variable is associated with the class as a whole rather than with specific instancesof a class. Non-static variables take on unique values with each object instance.
sivapurammani
- Dec 17th, 2013
Static variables are class variables, we can access these variables using class name and the variable value remains same for all the objects. Generally we can use these static variables as constants f...
Arvindanathan
- Dec 3rd, 2013
"c //feel it by doing package com.practise; public class StaticStringDemo { static String strObject1; String strObject2; public static void main(String args[]) { StaticStr...
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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...
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The following code defines the ThreadSample class. public class ThreadSample implements Runnable { public static void main(String args[]) { System.out.println("This is the ThreadSample object"); }
/ The following code defines the ThreadSample class. public class ThreadSample implements Runnable { public static void main(String args[]) { System.out.println("This is the ThreadSample object"); } public void run() { while (true) { try { Thread.sleep(100); System.out.println("Thread ran."); } catch (Exception e) {} } Referring to the sample...
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What is the legal range of a byte integral type?
A) 0 - 65, 535B) (-128) - 127C) (-32,768) - 32,767D) (-256) - 255
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Why Bind variables will be deleted when you restart the server. Can you change this scenario.
I am trying to develop a small application. In this i have provided registration and login form. Username and password are stored in the JNDI server. This application is working fine. but when i am restarting the server, all the bind variables are deleting. why? i want to store them permanently. can you provide me the solution.
Thanks in advance. -
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.
Suraj Patil
- Aug 16th, 2014
When you deals with >> operator, only shifting is done by moving count times towards right without any replacement by zero. but when you deals with >>> operator them like >> this operator but only di...
infant
- Oct 5th, 2005
While dealing with (+)ve numbers there is no difference between >>> and >> operators.Both operators shift zeros into the upper bits of a number.The difference arises when dealing with (...
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When object is created in Java. Is it during compile time or run time?
Keshav v. devale
- Sep 1st, 2014
Array of object created on run time?
Because user assigned values by runtime
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In order for a source code file, containing the public class Test, to successfully compile, which of the following must be true?
A) It must have a package statementB) It must be named Test.javaC) It must import java.langD) It must declare a public class named Test
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Explain White box testing related to Java ?
Abhishek Mishra
- Oct 5th, 2014
White Box Testing is a software testing method in which the internal structure/design/implementation of the item being tested is known to the tester. The tester chooses inputs to exercise paths throug...
ABHISHEK MISHRA
- Oct 5th, 2014
White box testing is the detailed investigation of internal logic and structure of the code. White box testing is also called glass testing or open box testing. In order to perform white box testing o...
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Python programming
How do i write a module to keep count of the amount of guesses it takes to guess the number correctly?
Abhishek Mishra
- Oct 8th, 2014
"c # This is a guess the number game. import random guessesTaken = 0 print(Hello! What is your name?) myName = input() number = random.randint(1, 20) print(Well, + myName + , I am...
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JUnit
What is JUnit and how it is used?
Satendra Kumar
- Nov 10th, 2014
JUnit is primary testing which is done by programmer to ensure that my code is a quality code.
we can used unit testing by creating test cases ........Abhishek Mishra
- Oct 10th, 2014
"java import org.junit.*; public class TestFoobar { @BeforeClass public static void setUpClass() throws Exception { // Code executed before the first test method ...
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Java code to set column width in CSV file
Can someone help on how to set the column width in CSV file using javacode.
I have used FileWriter class to upload data into the csv file. Results are getting populated properly but csv file showing results with default column width. Is there a way we can set the width of the column dynamically based on result length or set fixed length?
Dusmanta
- Nov 12th, 2014
Use Apachae POI jar for this HSSFSheet sheet = workBook.createSheet("testXls");
Code- // Code to Auto size the column widths
- for(int columnPosition = 0; columnPosition< 5; columnPosition++) {
- sheet.autoSizeColumn((short) (columnPosition));
- }
Abhishek Mishra
- Oct 8th, 2014
Account,LastName,FirstName,Balance,CreditLimit,AccountCreated,Rating 101,Reeves,Keanu,9315.45,10000.00,1/17/1998,A 312,Butler,Gerard,90.00,1000.00,8/6/2003,B 868,Hewitt,Jennifer Love,0,17000.00,5/25/1...
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Which characters may be used as the second character of an identifier,but not as the first character of an identifier
The digits 0 through 9 may not be used as the first character of an identifier but they maybe used after the first character of an identifier.
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What is the preferred size of a component
The preferred size of a component is the minimum component size that will allow thecomponent to display normally.
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Predict the output of the given code:
javapublic class Test {
private static String msg = "HCL ";
static{
Thread t = new Thread(new Runnable(){
public void run(){
msg = "Technologies ";
}
});
t.start();
}
public static void main(String[] args){
System.out.print(msg);
}}
a) Compiles and prints HCL
b) Compiles and prints Technologies
c) Compiles and...
Java Interview Questions
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