you cant cast an array object that contains an int to an array object that contains float. think it is written in K&B you can add a short to an array of ints but can assign an array of short to an array of ints. I leave the reason for you to find it then I know you will understand it.
ok then just remember that array of one primitive type cant be assigned to array of another primitive type
and you can put short byte char and int in an array of int.
and about the wrapper array i think you got that
If I remember, I told you before to not use Hindi on javaranch. People from all around the world visit javaranch, so please restrict yourself to using English...