生产者消费者模型——标志法
package Thread;
//测试生产者消费者问题2:信号灯发,标志位解决
public class PC2Thread {
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){
this.tv.play("演员表演中");
}else {
this.tv.play("插播广告");
}
}
}
}
//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;//表演的节目
boolean flag = true;
//表演
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);
//通知观众观看
this.notifyAll();
this.voice = voice;
this.flag = !this.flag;
}
public synchronized void watch(){
if(flag){
try {
this.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println("观看了:"+voice);
//通知演员表演
this.notifyAll();
this.flag = !this.flag;
}
}