I'm experimenting with collections and got myself stuck. I want a list
(ArrayList) to contain numbers, but it seems an ArrayList cannot
contain primitive int types. It seems to work OK with Integer. But how
do I cast an array of int to an array of Integer?

I've tried

 Integer[] numbers = { (Integer) 1, (Integer) 2}

and

          List list = new ArrayList(Arrays.asList((Integer) numbers));

Here is the code. Note that it worked when I had the array as String
and operated on letters.

import java.util.*;

public class TestCollection {

   public static void main(String args[]) {
   int[] numbers = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
   List list = new ArrayList(Arrays.asList((Integer) numbers));
   Iterator it1 = list.iterator();
   while(it1.hasNext())
   {
        Integer x = (Integer) it1.next();
        System.out.print("==>"+x+"[");
        Iterator it2 = list.iterator();
        while(it2.hasNext())
        {
              Integer y = (Integer) it2.next();
              if (!(x==y))
              {
                  System.out.print(y);
              }
             else
             {
                  System.out.print(" ");
             }
        }
        System.out.println("]");
   }
 }
}

Thanks for any help.
Mike