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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I have one table, in which I want one column (contents )to be NON DELETABLE by user, while rest (contents)are editable and deletable.How to do that??keeping .setenabled(false) makes every column non deletable.

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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yes.A statement can have multiple labels:ex:Label1: Label2: System.out.println("Mutliple labels. ");

No.

No.

No.

Foreign methods.

If the array size is negative, a NegativeArraySizeException is thrown

Length

Final or abstract but not both at the same time.

The parameter passing strategy in Java is call-by-value and not call-by-reference, regardless of the type of the parameter.

Actual parameters are parameters passed to the method when the method is invoked by a method call, and can vary from call to call. Formal parameters are parameters defined in the method definition.

The shift distance is calculated by AND-ing the value of the right-hand operand with a mask value of 0x1f (31) if the left-hand has the promoted type int, or using a mask value of 0x3f (63) if the left-hand has the promoted type long. This effectively means masking the five lower bits of the right-hand operand in the case of an int left-hand operand, and masking the six lower bits of the right-hand...

Nonassosiative.

True

Binary numeric promotion is applied in the following contexts:1.operands of the arithmetic operators *, /, %, +, and - 2.operands of the relational operators = 3.operands of the numerical equality operators == and != 4.operands of the integer bitwise operators &, ^, and |