Java中的生产消费者问题

 package day190109;
 
 import java.util.LinkedList;
 import java.util.Queue;
 import java.util.Random;
 
 public class 生产消费者ThreadDemo10 {
     public static void main(String[] args) {
         //生产消费者模式
         Queue<Phone> queue = new LinkedList<Phone>();
         Producer producer = new Producer(queue,30);
         Consumers consumers = new Consumers(queue,"李江萍");
         Consumers consumers1 = new Consumers(queue,"熊天明");
 
         producer.start();
         consumers.start();
         consumers1.start();
 
     }
 }
 class Producer extends Thread{
     public Queue<Phone> queue;
     public  int max;
     //构造方法
     public Producer(Queue<Phone> queue, int max) {
         this.queue = queue;
         this.max = max;
     }
 
     @Override
     public void run() {
         while (true){
            synchronized (queue) {
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                if (queue.size() == max) { //如果生产的商品满啦
                    try {
                        System.out.println("你好！本地库存产品已满！请通知消费之前来消费");
                        queue.wait();//先不忙生产，让消费者先消费
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                } else {
                    Random r = new Random();
                    Phone p = new Phone(r.nextInt(7), (double) r.nextInt(2000));
                    System.out.println("甲方已经生产了1个手机：" + p);
                    queue.offer(p);
                    System.out.println("      生产后现在的库存是：" + queue.size()+"个");
                    queue.notifyAll();//通知消费者。可以消费啦
                }
            }
         }
     }
 }
 class Consumers extends Thread{
     public Queue<Phone> queue;
     public String name;
     //构造方法
     public Consumers(Queue<Phone> queue, String name) {
         this.queue = queue;
         this.name = name;
     }
 
     @Override
     public void run() {
         while (true) {
             synchronized (queue) {
                 try {
                     Thread.sleep(1000);
                 } catch (InterruptedException e) {
                     e.printStackTrace();
                 }
                 if (queue.size() == 0) {
                     try {
                         System.out.println(this.name+"说：“你们本地库存产品严重不足”");
                         queue.wait();
                     } catch (InterruptedException e) {
                         e.printStackTrace();
                     }
                 } else {
                     Phone p = queue.poll();
                     System.out.println(this.name + "说：我要买1个手机：" + p);
                     System.out.println("      消费后现在的库存是：" + queue.size()+"个");
                     queue.notifyAll();//通知生产者可以生产了
                 }
             }
         }
     }
 }
 class Phone{
     private  Integer size;
     private Double price;
 
     public Phone(Integer size, Double price) {
         this.size = size;
         this.price = price;
 
     }
 
     @Override
     public String toString() {
         return "手机规格是{" +
                 "尺寸是:" + size +
                 ", 价格是:" + price +"元"+
                 '}';
     }
 }