简单的生产者消费者模式java实现_java 简单生产者消费者demo 买卖-优快云博客

本文介绍了一个使用Java实现的生产者消费者模式案例。该程序通过共享资源队列来协调多个生产者线程和消费者线程之间的操作。生产者线程不断地往队列中添加元素，而消费者线程则从队列中取出元素。为了保证线程安全，使用了synchronized关键字，并通过wait和notifyAll方法来控制线程间的同步。

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import java.util.LinkedList;

/**
 * 公共资源
 * 
 * @author
 *
 */
class Resource4 {
	private static LinkedList<Integer> shareResource = new LinkedList<Integer>();
	private int N;// 缓冲区大小
	private static volatile int number = 0;

	public Resource4(int N) {
		this.N = N;
	}

	public synchronized void produce() {
		// TODO Auto-generated method stub
		if (shareResource.size() >= N) {
			try {
				wait();
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}

		} else {
			++number;
			shareResource.add(number);
			System.out.println(Thread.currentThread().getName() + "生产了" + number);
			notifyAll();
		}

	}

	public synchronized void consumer() {
		// TODO Auto-generated method stub
		if (shareResource.size() <= 0) {
			try {
				wait();
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}

		} else {
			--number;
			System.out.println(Thread.currentThread().getName() + "消费了" + shareResource.pollLast());
			notifyAll();
		}

	}

}

/**
 * 生产者，可以不断的生成产品
 * 
 * @author
 *
 */
class Producer4 implements Runnable {

	private final Resource4 resource;

	public Producer4(Resource4 resource) {
		this.resource = resource;
	}

	@Override
	public void run() {
		while (true) {
			resource.produce();
		}

	}
}

/**
 * 消费者， 只要缓存队列不为空，可以不断的消费
 * 
 * @author
 *
 */
class Consumer4 implements Runnable {
	private final Resource4 resource;

	public Consumer4(Resource4 resource) {
		this.resource = resource;
	}

	@Override
	public void run() {
		while (true) {
			resource.consumer();
		}

	}

}

public class ProducerAndConsumer4 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		int N = 100;
		Resource4 resource = new Resource4(N);
		// 多个生成线程和消费者线程可以同时工作
		for (int i = 0; i < 2; i++) {
			new Thread(new Producer4(resource)).start();
			new Thread(new Consumer4(resource)).start();
		}

	}

}