자바 는 두 개의 스 레 드 시 뮬 레이 션 대 화 를 만 들 고 출력 을 교체 하여 분석 합 니 다.

/**
 * @auther:：9527
 * @Description:    
 * @program:    
 * @create: 2019-08-10 10:45
 */
public class Consumer extends Thread{
  private MiddleMan mid = null;


  public Consumer() {
  }

  public Consumer(MiddleMan movie) {
    this.mid = movie;
  }

  @Override
  public void run() {
    //    50     
    for (int i = 0; i <1000 ; i++) {
      try {
        Thread.sleep(100);
      } catch (InterruptedException e) {
        e.printStackTrace();
      }
      this.mid.get();
    }
  }
}

/**
 * @auther:：9527
 * @Description:
 * @program:    
 * @create: 2019-08-10 10:39
 */
public class Producer implements Runnable{
  //    
  private MiddleMan mid = null;
  private boolean flag = false;

  public Producer(MiddleMan movie) {
    this.mid = movie;
  }

  public Producer() {
  }

  @Override
  public void run() {
    //    ,        
    for (int i = 0; i <1000; i++) {
      if (flag){
        this.mid.set("jack ：","     ");
        flag = false;
      } else {
        this.mid.set("rose ：","    ？");
        flag = true;
      }
    }
  }
}

package com.duo;

/**
 * @auther:：9527
 * @Description:        
 * @program:    
 * @create: 2019-08-10 10:36
 */
public class MiddleMan {
  private String name;
  private String info;
  private boolean flag = true; //     ，       ，     

  public String getName() {
    return name;
  }

  public String getInfo() {
    return info;
  }

  public MiddleMan(String name, String info) {
    this.name = name;
    this.info = info;
  }

  public MiddleMan() {
  }

  public synchronized void set(String name,String info){
    if (!flag){
      try {
        super.wait();  //      
      } catch (InterruptedException e) {
        e.printStackTrace();
      }
    }
      this.name = name;
    try {
      Thread.sleep(100);
    } catch (InterruptedException e) {
      e.printStackTrace();
    }
      this.info = info;
    flag = false;  //     ，      
    super.notify(); //  Object notify  ，         
  }
  public synchronized void get(){
    if (flag){
      try {
        super.wait();
      } catch (InterruptedException e) {
        e.printStackTrace();
      }
    }
    System.out.println(this.getName()+"-"+this.getInfo());
    flag = true;
    super.notify(); //    
  }
}

/**
 * @auther:：9527
 * @Description:    
 * @program:    
 * @create: 2019-08-10 11:47
 */
public class Test {
  public static void main(String[] args) {
    //  ===>>            
    MiddleMan mid = new MiddleMan();
    Thread producer = new Thread(new Producer(mid));
    Thread consumer = new Thread(new Consumer(mid));
    producer.start();
    consumer.start();
  }
}