Common Wrapper Conversion Methods.....???

[Hennry Smith]

someone why we use wrapper classes and conversion methods...??? i have attached a file...please explain that table in that file........

[gaurav gupta sitm]

main purpose of wrapper class and its method are to convert ---
1) primitive values in object => Integer.valueOf(42)
2) object in primitive values => xxxValue()
3) String to wrapper object => Integer.valueOf("42")
4) wrapper object to String => new Integer(42).toString()
5) primitive values in String => Integer.toString(42)
6) String in primitive values => parseXxx()