CatchGame.java

abstract class Person {
    String name;
    Person(String name) {
        this.name = name;
    }
}

interface ICatchPlayer<T extends Throwable> {
    void throww(T object);
}

abstract class CatchPlayablePerson<T extends Throwable>
        extends Person implements ICatchPlayer<T> {

    CatchPlayablePerson<T> target;

    public CatchPlayablePerson(String name) {
        super(name);
    }
}

final class Ball extends Throwable {}

final class BallCatchPlayablePerson
        extends CatchPlayablePerson<Ball> {

    public BallCatchPlayablePerson(String name) {
        super(name);
    }

    @Override
    public void throww(Ball ball) {
        try {
            throw ball;
        } catch (Ball b) {
            target.throww(b);
        }
    }
}

public class CatchGame {
    public static void main(String[] args) {
        CatchPlayablePerson kittun = new BallCatchPlayablePerson("Kittun");
        CatchPlayablePerson kuala = new BallCatchPlayablePerson("Kuala");
        kittun.target = kuala;
        kuala.target = kittun;
        kittun.throww(new Ball());
    }
}