/** An Order is a relationship that can be implemented many ways
@author Dick Botting
@version 1.0
*/
interface Order{
/**  if a.lessThan(b) then a should be before b in a correctly ordered list.
    This function must follow the rules for a linear order.
    This means that precisely one of
		a.lessThan(b) or a==b or b.lessThan(a) is true for all a and b,
	and if a.lessThan(b) and b.lessThan(c) then a.lessThan(c).
*/
   public boolean lessThan(Object y);
}

/** Test Class
@author Dick Botting
@version 1.0
*/
class OrderedInt implements Order{
	protected int me;
	public OrderedInt(int i){me=i;}

	public boolean lessThan( Object y)
	{return me < ((OrderedInt)y).me;}


	public static void main(String args[])
	{
		boolean tester=new OrderedInt(3).lessThan(new OrderedInt(4));
		System.out.println(tester);
		tester=new OrderedInt(4).lessThan(new OrderedInt(3));
		System.out.println(tester);
	}
}//OrderedObject