Java面向对象--小游戏2

package p0721;

class Player {
    public void happy(Game game) {
        game.start();   // 开机
        game.play();    // 开始玩游戏
        game.end();     // 关机
        System.out.println("开心");
    }
}
class Game {
    public void start() {
        System.out.println("开机了，就绪...");
    }
    public void play() {
        System.out.println("开始打游戏了");
    }
    public void end() {
        System.out.println("关机，睡觉...");
    }
}
class LOL extends Game{
    public void  play() {
        System.out.println("LOL,李青，快乐宝贝走起...");
    }
}
class CS extends Game {
    public void  play() {
        System.out.println("CS,人物King走起...");
    }
}
public class Demo0721 {
    public static void main(String[] args) {
        LOL LoL = new LOL();
        CS CS = new CS();

        Player p = new Player();
        p.happy(LoL);
        p.happy(CS);
    }
}