Java question

[ConstipatedVigilante]

I'm taking a computer science class at school. We're learning the basic stuff, but I can't remember how to convert an object (that was put into an ArrayList as an int) back to an int. It gives me the incompatible types error at the second for loop.

import java.util.*;

public class Permutator
{
public static int[] getPermutation(int[] a)
{
Random gen = new Random();
int temp;
int change;
int[] revert = new int[5];
ArrayList copy = new ArrayList();

for(int i = 0; i < 5; i++)
{
copy.add(a);
}

for(int i = 0; i < 5; i++)
{
temp = gen.nextInt(5);
revert = copy.get(change);
copy.remove(temp);
}
return revert;
}
public static void main()
{
int[] b = {1, 2, 3, 4, 5};
int[] c = getPermutation(b);

for(int i = 0; i < 5; i++)
{
System.out.println(c);
}
}
}

Edit: First time posting code here, and it comes out even more messed up in "attach code." Sorry.

 

[Cooler]

if you are using java 1.5 It will do auto boxing and typecasting for you when you use generics.

// An Array List of only int/Integer objects.
ArrayList copy<Integer> = new ArrayList<Integer> ();