Thanks for all u r valuable suggestion and valuable time.
I'll make it clear of my requirement.
In my jar file i have N number of class files, out of that i need to know one of the class files entire path .
Actaully what i am trying to do is .I have got a mthod called getPath(obj).
If i pass the particular class as an object to the method,i should get the real path of the class file which has been passed as the object.