多线程之生产者和消费者模式

最新推荐文章于 2025-02-18 10:16:28 发布

原创最新推荐文章于 2025-02-18 10:16:28 发布 · 483 阅读

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本文介绍了一个使用Java实现的生产者消费者模式案例。通过一个资源类Resource协调多个生产者与消费者的同步问题，确保在多线程环境下正确处理资源的生产和消费过程。

package com.instances;
class Resource{
private String name;
private int count=1;
private boolean flag=false;
public synchronized void set(String name){
  while (flag) {
   try {
    this.wait();
   } catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
  }
  this.name=name+count;
  count++;
  System.out.println(Thread.currentThread().getName()+"--生产者--"+this.name);
  flag=true;
  notifyAll();
}
public synchronized void out(){
  while (!flag) {
   try {
    this.wait();
   } catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
  }
  System.out.println(Thread.currentThread().getName()+"--消费者----"+this.name);
  flag=false;
  notifyAll();
}
}
class Producer implements Runnable{
private Resource r;
public Producer(Resource r) {
  this.r=r;
}
@Override
public void run() {
  while (true) {
   r.set("全聚德烤鸭");
  }
}

}
class Customer implements Runnable{
private Resource r;
public Customer(Resource r) {
  this.r=r;
}
@Override
public void run() {
  while (true) {
   r.out();
  }
}

}
public class ProducerCustomer {
public static void main(String[] args) {
  Resource r=new Resource();
  Producer p=new Producer(r);
  Customer c=new Customer(r);
  Thread t1=new Thread(p);
  Thread t2=new Thread(p);
  Thread t3=new Thread(c);
  Thread t4=new Thread(c);
  t1.start();
  t2.start();
  t3.start();
  t4.start();
}
}