线程同步（消费者与生产者）

最新推荐文章于 2021-05-21 16:04:07 发布

翻译最新推荐文章于 2021-05-21 16:04:07 发布 · 369 阅读

文章标签：

#class #null #thread #string #up

java基础专栏收录该内容

14 篇文章

订阅专栏

本文通过一个简单的餐厅场景，模拟了厨师准备食物与服务员传递食物的过程。利用Java多线程技术，实现了厨师与服务员之间的协作，当厨师完成食物制作后会通知服务员进行传递。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

package com.t1009;

class Order {
   /**
   * 订单类
   * */

   private static int i = 0;
   private int count = i++;

   public Order() {

       if (count == 10) {

           System.out.println(" out of food,closing");
           System.exit(0);
       }
   }

   public String toString() {

       return "Order " + count;
   }
}

class WaitPerson extends Thread {

   /**
   * 服务员
   * */

   private Restaurant restaurant;

   public WaitPerson(Restaurant r) {

       this.restaurant = r;
       start();
   }

   @Override
   public void run() {

       while (true) {

//如果没有订单，那么服务员wait()继续等待

           while (restaurant.order == null) {
               synchronized (this) {

                   try {

                       wait();
                   } catch (InterruptedException e) {
                       throw new RuntimeException(e);
                   }
               }

//如果有订单，打印出订单号，并将订单标志为null，说明该订单已处理

               System.out.println("WaitPerson got" + restaurant.order);

               restaurant.order = null;
           }
       }
   }

}

class Chef extends Thread {
/**
*   厨师
* */
   private Restaurant restaurant;
   private WaitPerson waitperson;

   public Chef(Restaurant r, WaitPerson w) {

       this.restaurant = r;
       this.waitperson = w;

       start();
   }

   @Override
   public void run() {

       while (true) {

           if (restaurant.order == null) {
               restaurant.order = new Order();

               System.out.println("Order up!");

//厨师将订单上面的菜制作好后，将服务员唤醒
               synchronized (waitperson) {
                   waitperson.notify();
               }
           }

           try {
               sleep(100);
           } catch (InterruptedException e) {

               throw new RuntimeException(e);
           }
       }

   }

}

public class Restaurant {


   /**
   * 餐馆
   * */
       Order order;

   public static void main(String[] args) {

       Restaurant restaurant=new Restaurant();

       WaitPerson waitPerson=new WaitPerson(restaurant);

       Chef chef=new Chef(restaurant,waitPerson);







   }




}