class Item<T extends Comparable<? super T>> implements
    Comparable<Item<T>> {
  @Override
  public int compareTo(Item<T> o) {
 // TODO Auto-generated method stub
    return 0;
  }
}

public class ItemCont<T extends Item<T>> {

  public static void main(String[] args) {
    Item<Integer> it = new Item<Integer>(); //ok
    ItemCont<Item<Integer>> cont = new ItemCont<Item<Integer>>(); // Error
//    Bound mismatch: The type Item<Integer> is not a valid substitute for the bounded parameter <T exten
//    ds Item<T>> of the type ItemCont<T>

  }
}