Java经典线程同步问题------生产者与消费者

最新推荐文章于 2020-12-02 09:34:41 发布

最新推荐文章于 2020-12-02 09:34:41 发布 · 151 阅读

文章标签：

#java

本文介绍了一个简单的生产者消费者模型，通过使用Java的线程、同步队列和类来实现多线程并发处理。详细阐述了生产者如何向队列中添加元素，消费者如何从队列中获取元素，并讨论了同步机制的重要性。

先上代码

class Test
{
	public static void main(String []args)
	{
		Queue q=new Queue();
		Producer p=new Producer(q);
		Consumer c=new Consumer(q);
		p.start();
		c.start();
	}
}

class Producer extends Thread
{
	Queue q;
	Producer(Queue q)
	{
		this.q=q;
	}
	public void run()
	{
		for(int i=0;i<10;i++)
		{	
			q.put(i);
			System.out.println("Producer put"+i);
		}
	}
}
class Consumer extends Thread
{
	Queue q;
	Consumer(Queue q)
	{
		this.q=q;
	}
	public void run()
	{
		while(true)
		{
			System.out.println("Consumer get"+q.get());
		}
	}	
}

class Queue
{
	int value;
	boolean bFull=false;
	public synchronized void put(int i)
	{
		
		if(!bFull)
		{
		value=i;
		bFull=true;
		notify();
		}
	try{
	wait();
	}
	catch(Exception e)
	{}
	}
	public synchronized int get()
	{
	if(!bFull)
	{
		try
		{
			wait();
		}
		catch(Exception e)
		{
		
		}
	}
	bFull=false;
	notify();
	return value;
	}
}

运行结果

Producer put0
Consumer get0
Consumer get1
Producer put1
Consumer get2
Producer put2
Consumer get3
Producer put3
Consumer get4
Producer put4
Consumer get5
Producer put5
Consumer get6
Producer put6
Consumer get7
Producer put7
Consumer get8
Producer put8
Consumer get9
Producer put9