storing random no in Array...wiDout repetition

[Muhammad Shahzad]

Hi,
I wana store random numbers in an Array without repetition...pleade guide me how to do it....
I am using the logic given below, but it does'nt work....

 public class RArray{
  public static void main(String args[]){
int arr[]=new int[15];
int i=0;
for(i=0;i<=14;i++){
arr[i]=(int)(Math.random()*15)+1;
   for(int j=0;j<=i;j++){
       int num=(int)(Math.random()*15)+1;    
      if (arr[i] == arr[j]){
            i--;
            
    }
      else{
           arr[i]=num;
           }
                         }
                       }
     

System.out.print("\n\n");
for(int k=0;k<=14;k++){
     System.out.print(arr[k]+" ");
                      }
System.out.print("\n\n");
}
     }

Please let me know the correct logic.
thanks
[Dave added code tags]
[ October 15, 2002: Message edited by: Dave Vick ]

[Ron Newman]

Use a HashSet, not an array. You can later make an array from the Set if you need one.