difference between Integer and BigInteger

Hello All
I have a doubt please clarify this
what are the major differences between primitive int,java.lang.Integer,java.math.BigInteger

and How can i make use of BigInteger class

thanks all in advance

"kushwanth" (previously "prutvi raj"),

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With respect to your question, have you checked the API documentation?
[ December 16, 2007: Message edited by: marc weber ]

Integer is a wrapper of the primitive type int.The wrapper classes are basically used in cases where you want to treat the primitive as an object for ex-trying to pass an int value in a method that would take only a type of Object in such a case you would want to wrap primitive int value in the wrapper Integer which is of type Object. To know specific advantages of Integer I would suggest you to take a look at the Integer api provided by Sun.

Now coming to the BigInteger, you would use it in calculations which deal with very large numbers.The use of BigIntegers is in Security where typically it is used for keys specifications.For more info on BigIntegers take a look at the following link http://java.sun.com/j2se/1.4.2/docs/api/java/math/class-use/BigInteger.html

I hope the info helped you.