public class HandlerOrder implements Comparable {
  private final int priority;
  private HandlerOrder(int priority) {
    this.priority = priority;
  }
  public int compareTo(Object o) {
    if (o instanceof HandlerOrder) {
      HandlerOrder order = (HandlerOrder)o;
      if (this.priority < order.priority) return -1;
      else if (this.priority > order.priority) return 1;
      else return 0;
    }
    else throw new ClassCastException();
  }
  public static final HandlerOrder EARLY = new HandlerOrder(0);
  public static final HandlerOrder NO_PREFERENCE = new HandlerOrder(1);
  public static final HandlerOrder LATE = new HandlerOrder(2);
}