Add hashset integers to int array in java

static int [] hashset_to_int_array(HashSet<Integer> hs){
  
  int array[] = new array[hs.size()];
  
  Iterator itr = hs.iterator();

  int i=0;

  while(itr.hasNext()){
  array[i++] = Integer.parseInt(itr.next().toString());
  }

  return array;
 }