java多线程---生产者消费者模式

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我所理解的生产者消费者模式：生产者有物品的时候则等待，没有则生产，生产后，通知消费者，也就是使用notifyall唤醒线程

消费者有物品则消费，没有就等待，通着生产者生产，唤醒线程

package com.qf.demo;public class Test3 {public static void main(String[] args) {SuperMarket superMarket = new SuperMarket();// FactoryDemo factoryDemo = new FactoryDemo(superMarket);Customer customer = new Customer(superMarket);// Thread thread = new Thread(factoryDemo, "工厂");Thread thread2 = new Thread(customer, "顾客");// thread.start();thread2.start();}}class Bread{int id ;String brand;public Bread(int id, String brand) {super();this.id = id;this.brand = brand;}public int getId() {return id;}public void setId(int id) {this.id = id;}public String getBrand() {return brand;}public void setBrand(String brand) {this.brand = brand;}}class  SuperMarket{Bread[] breads = new Bread[6];int index = -1;// 从-1 开始表示什么都没有public synchronized void addBread(Bread bread){if(index>=5){try {this.wait();} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}index++;// 给面包数组赋值breads[index] = bread;System.out.println(Thread.currentThread().getName()+"生产了"+bread.getId()+"品牌是"+bread.getBrand()+"下标为"+index);this.notifyAll();}public synchronized void saleBread(){if(index<=-1){try {this.wait();} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}// 需求是打印一下被卖的面包的信息  , 让下标--Bread bread = breads[index];System.out.println(Thread.currentThread().getName()+"卖了"+bread.getId()+"品牌是"+bread.getBrand()+"下标为"+index);// 下标--index--;this.notifyAll();}}class FactoryDemo implements Runnable{// 使用容器类作为属性SuperMarket market;public FactoryDemo(SuperMarket market) {super();this.market = market;}@Overridepublic void run() {for (int i = 0; i < 80; i++) {Bread bread = new Bread(i, Thread.currentThread().getName());market.addBread(bread);}}}class Customer implements Runnable{SuperMarket market;public Customer(SuperMarket market) {super();this.market = market;}@Overridepublic void run() {for (int i = 0; i < 80; i++) {market.saleBread();}}}

创建面包类，超市使用这些面包，超市最多有6个，如果少于6个，则工厂类给予生产，消费者可以购买

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