java模拟生产者消费者问题

最新推荐文章于 2020-12-09 15:44:04 发布

原创最新推荐文章于 2020-12-09 15:44:04 发布 · 827 阅读

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#java #thread #class #string #c

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本文通过一个并发编程的实例，展示了线程同步、等待和通知机制的应用，包括线程之间的互斥和资源共享问题的解决。

package com.jzm.thread;

class Q {
int n;
boolean valueSet = false;
synchronized int get(){
   // 值还没有放，等待put放值
   if (!valueSet){
       try {
     wait();
   } catch (InterruptedException e) {
    System.out.println("Interrupt caught");
   }
  }

   System.out.println("got : "+n);
   valueSet = false;
   notify();
   return n;
}

synchronized void put(int n){
   // 值放了，等待got拿走值，再放置值
   if (valueSet) {
       try {
     wait();
   } catch (InterruptedException e) {
    System.out.println("Interrupt caught");
   }
  }
  this.n = n;
  System.out.println("put : " +n);
  valueSet = true;
  notify();
}
}

class Producer implements Runnable {
Q q;
public Producer(Q q){
     this.q = q;
     new Thread(this,"Producer").start();
}

@Override
public void run() {
  int i=0;
  while(true){
   q.put(i++);
  }
}
}
class Consumer implements Runnable {
Q q;
    public Consumer(Q q) {
     this.q = q;
     new Thread(this,"Consumer").start();
    }
@Override
public void run() {
  // TODO Auto-generated method stub
  int i=0;
  while(true){
   q.get();
  }
}
}
public class CustomerProduct {
public static void main(String[] args) {

  Q q = new Q();
  new Producer(q);
  new Consumer(q);
    System.out.println("press contro_c to stop");
}