生产者消费者模式2-->信号灯法

生产者消费者模式2-->信号灯法

public class TestPC2 {

    public static void main(String[] args) {
        TV tv = new TV();
        new Player(tv).start();
        new Watcher(tv).start();
    }
}
//生产者-->演员
class Player extends Thread{
    TV tv;

    public Player(TV tv) {
        this.tv = tv;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            if (i%2 == 0){
                tv.play("征服");
            }else {
                tv.play("老鼠爱大米");
            }
        }
    }
}
//消费者-->观众
class Watcher extends Thread{
    TV tv;

    public Watcher(TV tv) {
        this.tv = tv;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            tv.watch();
        }
    }
}
//产品-->节目
class TV{
    //演员表演，观众等待 T
    //观众观看，演员等待 F
    String voice;//演员表演的节目
    boolean flag = true;//设置标志位
    public synchronized void play(String voice){
        if (!flag){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("演员表演了--- >" + voice);
        this.notifyAll();//通知观众观看
        this.voice = voice;
        this.flag = !this.flag;
    }
    public synchronized void watch(){
        if (flag){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("观众观看了" + voice);
        this.notifyAll();
        this.flag = ! this.flag;
    }
}
public class TestPC2 {

    p