use of wrapper class

[Amirtharaj Chinnaraj]

hi folks

i want to know the purpose of wrapper class in java

looking for your replies

regards
amir

[jayalal jayarathna]

wrapper class are there to bring object behaviour to primitives.

[Campbell Ritchie]

Wrapper classes also provide methods which manipulate or investigate primitives, eg "toBinaryString()", "isJavaIdentifierPart()" and some data eg MAX_VALUE.
Look up the wrapper classes in the API: Boolean, Byte, Character, Double, Float, Long, Integer, Number, Short. I think it unfortunate that two wrapper classes have different names from their primitive counterparts. I have included Number since it is the cuperclass of several of the wrapper classes.

[Amirtharaj Chinnaraj]

when and where the necessities will be arised

to represent a primitive type as an object

apart from putting primitive type objects in a collection

regards
amir

[Srikanth Ramu]

In Wrapper class you will find several utility methods for eg: Integer has method to convert an int to a String and a String to an int etc, Character has methods to change the cases, check for digits, identify spaces etc