java實現生產者與消費者

package concurrent;

import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;

/**
 * Created by geekgao on 16-3-4.
 */
public class ProducerAndConsumer2 {
    public static void main(String[] args) {
        BlockingQueue<Integer> blockingQueue = new ArrayBlockingQueue<Integer>(5);


        //一個生產者和兩個消費者
        new Thread(new Producer2(blockingQueue)).start();
        new Thread(new Consumer2(blockingQueue)).start();
        new Thread(new Consumer2(blockingQueue)).start();
    }
}


class Producer2 implements Runnable {
    private BlockingQueue<Integer> blockingQueue;


    public Producer2(BlockingQueue<Integer> blockingQueue) {
        this.blockingQueue = blockingQueue;
    }


    public void run() {
        try {
            //生產20個產品
            for (int i = 0;i < 20;i++) {
                //當隊列滿了，put會自己阻塞住
                blockingQueue.put(i);
            }
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}

class Consumer2 implements Runnable {

    private BlockingQueue<Integer> blockingQueue;

    public Consumer2(BlockingQueue<Integer> blockingQueue) {
        this.blockingQueue = blockingQueue;
    }

    public void run() {
        //一直從隊列中取產品來消費
        while(true) {
            try {
                //隊列爲空時take會阻塞住
                System.out.println(Thread.currentThread().getName() + "：" + blockingQueue.take());
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}