package com.li;
//测试:生产者消费者问题 --> 信号灯法
//电视台(节目,广告)、观众、电视
public class TestPC2 {
public static void main(String[] args) {
TV tv = new TV();
TVStation tvStation = new TVStation(tv);
Audience audience = new Audience(tv);
tvStation.start();
audience.start();
}
}
//电视台
class TVStation extends Thread{
TV tv;
public TVStation(TV tv) {
this.tv = tv;
}
@Override
public void run() {
for (int i = 0; i < 10; i++) {
if (i%2==0) {
try {
this.tv.play("好看的电视剧");
} catch (InterruptedException e) {
e.printStackTrace();
}
} else {
try {
this.tv.play("广告");
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
}
//观众
class Audience extends Thread{
TV tv;
public Audience(TV tv) {
this.tv = tv;
}
@Override
public void run() {
for (int i = 0; i < 10; i++) {
try {
tv.watch();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
//电视
class TV {
//电视台准备播放节目,观众等待 T
//观众看节目,电视台等待 F
String program;//节目
boolean flag = true;
//电视台准备播放节目
public synchronized void play(String program) throws InterruptedException {
if (!flag) {
//观众观看,电视台等待
this.wait();
}
//电视台准备节目
System.out.println("电视台准备了节目:" + program);
this.notifyAll();//通知观众
this.program = program;
this.flag = !this.flag;//刷新标志位
}
//观众看节目
public synchronized void watch() throws InterruptedException {
if (flag) {
//电视台准备节目,观众等待
this.wait();
}
System.out.println("观看了:" + program);
//观众看完了节目,通知电视台
this.notifyAll();
this.flag = !this.flag;
}
}
Java零基础学java之多线程--22生产者消费者问题:信号灯法
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Origin blog.csdn.net/l1341886243/article/details/118424625
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