Java之接口与工厂详解二（附源码）

package com.mufeng.theninthchapter;

interface Game {
boolean move();
}

interface GameFactory {
Game getGame();
}

class Checkers implements Game {
private int moves = 0;
private static final int MOVES = 3;

@Override
public boolean move() {
// TODO Auto-generated method stub
System.out.println("Checkers move " + moves);
return ++moves != MOVES;
}

}

class CheckersFactory implements GameFactory {

@Override
public Game getGame() {
// TODO Auto-generated method stub
return new Checkers();
}

}

class Chess implements Game {
private int moves = 0;
private static final int MOVES = 4;

@Override
public boolean move() {
// TODO Auto-generated method stub
System.out.println("Chess move " + moves);
return ++moves != MOVES;
}

}

class ChessFactory implements GameFactory {

@Override
public Game getGame() {
// TODO Auto-generated method stub
return new Chess();
}

}

public class Games {
public static void playGame(GameFactory factory) {
Game s = factory.getGame();
while (s.move())
;
}

public static void main(String[] args) {
playGame(new CheckersFactory());
playGame(new ChessFactory());
}

}

Checkers move 0
Checkers move 1
Checkers move 2
Chess move 0
Chess move 1
Chess move 2
Chess move 3