Nice Design Patterns question

Question:

Rewrite Item, Paper, Scissors, Rock classes without using reflection (instanceof in particular).

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public abstract class Item {

//return 1 if the receiver wins, -1 if it looses,

//0 otherwise.

public abstract int play(Item that);

}

public class Paper extends Item {

@override public int play(Item that) {

if(that instanceof Rock) return 1;

if(that instanceof Scissors) return -1;

return 0;

}

}

public class Scissors extends Item {

@override public int play(Item that) {

if(that instanceof Rock) return -1;

if(that instanceof Paper) return 1;

return 0;

}

}

public class Rock extends Item {

@override public int play(Item that) {

if(that instanceof Scissors) return 1;

if(that instanceof Paper) return -1;

return 0;

}

}

public static void main(String[] args)

{

Item rock = new Rock();

Item scissors = new Scissors();

if(rock.play(scissors) > 0)

System.out.println("Rock Wins");

else if(rock.play(scissors)

System.out.println("Rock Looses");

else

System.out.println("Tie");

}

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About the game: http://en.wikipedia.org/wiki/Rock-paper-scissors