I'm tryng to build a set of int array...
but it doesn't works.. I don't know how to use the api.. please help..

this must output ok but it doesnt, only "azz"
public class Main {

   /** Creates a new instance of Main */

   static class pica{
       int[] data;
       public boolean equals(Object a){
           return (a instanceof
pica)&&java.util.Arrays.equals(data,((pica)a).data);
       }

   }
   public Main() {

   }

   /**
    * @param args the command line arguments
    */

   public static void main(String[] args) {
       int a[]=new int[]{1,2};
       int b[]=new int[]{1,2};

       pica ap=new pica();
       pica bp=new pica();
       ap.data=a;
       bp.data=b;

       java.util.Set<pica> set =new java.util.HashSet<pica>();
       set.add(ap);

//        if
(set.contains((java.util.List)java.util.Arrays.asList(b)))System.out.println("ok");
       if(set.contains(bp)) System.out.println("ok");
       else System.out.println("azz");
       System.out.println(a.hashCode());
       System.out.println(b.hashCode());
       System.out.println(java.util.Arrays.asList(a).hashCode());
       System.out.println(java.util.Arrays.asList(b).hashCode());