public class MultiplicationGame extends TwoPlayerGame //implements Playable {   private int product;    private int answer;    private int nCorrect = 0;    private boolean gameOver = false;    private int n1,n2;    public MultiplicationGame() { 	n1 = 1 + (int)(Math.random()* 10);	n2 = 1 + (int)(Math.random()* 10);	product = n1 * n2;    }    public String getRules() {        return "\n*** The Rules of Multiplication Game ***\n" +        "Player 1 will present a multiplication problem\n" +        "Player 2 will present an answer\n" +        "The game ends when Player 2 gives a wrong answer\n" +        "I'm Player 1 and you are Player 2\n";    }    public int getWinner() {        return 2;    }    public String report() {        return "Player1: What is " + n1 + " times " + n2 + " ? ";    }    public String move(String s) {        answer = Integer.parseInt(s);               gameOver = answer != product;        String reply = "\nPlayer1: Good! " + n1 + " times " + n2 + " equals " + product;                            if (!gameOver) {            ++nCorrect;	    n1 = 1 + (int)(Math.random()* 10);	    n2 = 1 + (int)(Math.random()* 10);	    product = n1 * n2;            reply += "\nWhat is " + n1 + " times " + n2 + " ? "; 	} else {	    reply =  "\nOops! " + n1 + " times " + n2 + " equals " + product + "\n" +		"The game is over.\nYou win because you got " + nCorrect + " correct.\n";	}        return reply;    }    public boolean gameOver() {        return gameOver;    }    public String prompt()    {   return "\n";    }    /*    public void play(KeyboardReader reader) {        int n1 = 0, n2 = 0;        kb = reader;        kb.display(getRules());        while (!gameOver()) {            n1 = 1 + (int)(Math.random()* 10);            n2 = 1 + (int)(Math.random()* 10);            product = n1 * n2;            kb.display("Player1: What is " + n1 + " times " + n2 + " ? ");            int answer = kb.getKeyboardInteger();            gameOver = answer != product;            ++nCorrect;	}	kb.display("Oops! " + n1 + " times " + n2 + " equals " + product + "\n");	kb.display("The game is over.\nYou win because you got " + (nCorrect-1) + " correct.\n");   }   */ /*   public void play(GameGUI gui) {        this.gui = gui;	//        gui.callBack((TwoPlayerGame)this);        gui.callBack(this);    } */    public static void main(String args[]) {       // KeyboardReader kb = new KeyboardReader();       // MultiplicationGame game = new MultiplicationGame();       // game.play(kb);    }}