package com.wenshao.juc;
/**
* 生产者和消费者案例
*
* @author Administrator
*
*/
public class TestProductorAndConsumer {
public static void main(String[] args) {
Clerk clerk = new Clerk();
Productor productor = new Productor(clerk);
Consumer consumer = new Consumer(clerk);
new Thread(productor, "生产者 A").start();
new Thread(consumer, "消费者 B").start();
new Thread(productor, "生产者 C").start();
new Thread(consumer, "消费者 D").start();
}
}
class Clerk {
private int product = 0;
// 1. 进货
public synchronized void get() {
while(product >= 1) { // 为了避免虚假唤醒问题，wait() 应该总是使用在循环中
System.out.println("产品已满");
try {
this.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println(Thread.currentThread().getName() + ":" + ++product);
this.notifyAll();
}
// 2. 卖货
public synchronized void sale() {
while (product <= 0) {
System.out.println("缺货！");
try {
this.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println(Thread.currentThread().getName() + ":" + --product);
this.notifyAll();
}
}
// 生产者
class Productor implements Runnable {
private Clerk clerk;
public Productor(Clerk clerk) {
super();
this.clerk = clerk;
}
@Override
public void run() {
for (int i = 0; i <= 20; i++) {
try {
Thread.sleep(200);
} catch (InterruptedException e) {
e.printStackTrace();
}
clerk.get();
}
}
}
// 消费者
class Consumer implements Runnable {
private Clerk clerk;
public Consumer(Clerk clerk) {
super();
this.clerk = clerk;
}
@Override
public void run() {
for (int i = 0; i <= 20; i++) {
clerk.sale();
}
}
}
