Tanmoy Chakraborty

• Aug 7th, 2007

There is no Specific Layout for adding ToolBar.You can use null layout for use a toolbar at the position where you want.

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sujatham

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• Aug 2nd, 2007

In the below program local variable  is shadowed with field variable.class shadowing{int  i=20;System.out.print("Value of i:");System.out.println(i);void method(){int i=10;System.o...

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sujatham

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• Aug 2nd, 2007

I we declare variable I  like  below,volatile int I;each thread  will occupy  a separate copy  of  variable I.If we  declare a variable I like below,int I;each thread will share the same variable.

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sujatham

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• Aug 2nd, 2007

1.wait(),notify(),notifyAll()   methods can only be executed on an object whose lock the thread holds, otherwise, the call will result in an IllegalMonitorStateException.2.wait(),notify(),no...

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The Collection interface provides support for the implementation of a mathematical bag -an unordered collection of objects that may contain duplicates.

sujatham

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• Aug 2nd, 2007

A basic interface that defines the normal operations that allow a collection of objects to be maintained or handled as a single unit.

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Mir

• Aug 1st, 2007

Both the technologies are server side technologies,each of them has its own advantages.The basic advantages of Servlet over JSP are1) The execution time required in the servlet is lesser than, because...

Guest

• Jan 5th, 2007

There is no advantage of servlets over jsp. Whatever servlets can do will be done by JSPs also. A JSP is ultimately a servlet. We go for JSP to seperate the bussiness logic from the presentation logic...

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An object's finalize() method may only be invoked once by the garbage collector.

Subhash

• Jul 31st, 2007

What if in the finalize method I make the object reachable.<code>class a{        b b1=null;        ..}class b{ &nb...

Tharani devi

• Oct 8th, 2005

Finalize method of an object is executed only once.

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Bala

• Jul 31st, 2007

Vector was used in the older version of java where all the methods are synchronised for thread safety, but since it was creating a lot of performance problem ArrayList was introduced where none of the methods are synchronised

vikramaditya Garg

• Dec 15th, 2005

Vector is a dynamic collection whose size increases with addition of more elements.Array's size is not dynamic.Means that vector is based on dynamic memory allocation.

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This() is used to invoke a constructor of the same class. super() is used to invoke a superclass constructor.

sujatham

 Profile Answers by sujatham Questions by sujatham

• Jul 31st, 2007

This()  is used to invoke  current object constructor.super()  is used to invoke super class constructor.

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sujatham

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• Jul 29th, 2007

The Vector and ArrayList classes are implemented using dynamically resizable arrays, providing fast random access and fast list traversal—very much like using an ordinary array. Unlike the Array...

haijing

 Profile Answers by haijing Questions by haijing

• Jun 9th, 2007

If you use a Vector in your code and compile it, the compiler will not complain Vector is deprecated. So, I do not think Vector is deprecated. ArrayList is the newer version of Vector, which is not synchronized. ArrayList is recomended for situations where you do not need synchronization.

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A local inner class may be final or abstract.

sujatham

 Profile Answers by sujatham Questions by sujatham

• Jul 29th, 2007

A local inner class may be declared as abstract or final.But not both at the same time.

shivakumar

• Oct 14th, 2005

Static ,final and abstract

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It is referred to as the modulo or remainder operator. It returns the remainder of dividingthe first operand by the second operand.

sujatham

 Profile Answers by sujatham Questions by sujatham

• Jul 29th, 2007

1.For integer remainder operation, where only integer operands are involved, evaluation of the expression (x % y) always satisfies the following relation:x == (x / y) * y...

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The sizeof operator is not a keyword.

sujatham

 Profile Answers by sujatham Questions by sujatham

• Jul 29th, 2007

No,sizeof is not a keyword.

sarada

• May 3rd, 2007

Unlike C++ sizeof is not a keyword in java.

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Explain details of concept of"object iceland" in garbage collection (object lifetime) in core java

sujatham

 Profile Answers by sujatham Questions by sujatham

• Jul 28th, 2007

Ans):if a composite object becomes unreachable, then its constituent objects also become unreachable, barring any reachable references to the constituent objects.ex:objects o1, o2, and o3 form a circu...

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keshav

• Jul 24th, 2007

Java Virtual Machine consists of the following Components: 1. Class Loader2. Byte Code verifier3. Interpreter4. Just In Time Complier5. Security Manager6.Garbage CollectorClass Loader loads the .class...

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Thamizhselvi

• Jul 23rd, 2007

Listeners are created by implementing one or more interfaces defined by the java.awt.event Package.Commonly used Event Listener Interfaces: 1.ActionListener : This ...

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Thamizhselvi

• Jul 23rd, 2007

Trusted Applet : A trusted applet can perform operations such as reading, writing data to a local computer.We can access n/w connections from any host on...

Padma

• Oct 7th, 2005

     Trusted applets r predefined     Untrusted applets r not predefined

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Thamizhselvi

• Jul 23rd, 2007

1.The current length of a StringBuffer can be found through length(). 2.The total allocated capacity can be found via capacity(). Example: class Demo { public static void main(String a[]) {...

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Thomas B

• Jul 24th, 2007

C++ is also an OOP Language!Java syntax is C++ minus pointers, templates, multiple inheritance, operator overloading ....Maybe java enforces OO programming in a more strict manner than C++, whereas C+...

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Thamizhselvi

• Jul 23rd, 2007

An object that describes a change of state in a source component [ Elements of the GUI] is called event. When we interact with these Source Components, their state changes then various events to occ...

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