快速实现一个生产者-消费者模型demo

package jesse.test1;

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

// 生产者
class Producer implements Runnable{
    private BlockingQueue<String> queue;

    public Producer(BlockingQueue<String> queue) {
        super();
        this.queue = queue;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            try {
                Thread.sleep(10L);
                String msg = "msg"+i;
                System.out.println("Produce new item: "+msg);
                queue.put(msg);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        try {
            System.out.println("Time to say goodbye");
            queue.put(ProducerConsumerModel.EXIT_MSG);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

}

//消费者
class Consumer implements Runnable{
    private BlockingQueue<String> queue;

    public Consumer(BlockingQueue<String> queue){
        this.queue = queue;
    }

    @Override
    public void run() {
        try {
            String msg ;
　　　　　　　//取值即判断
            while(!ProducerConsumerModel.EXIT_MSG.equals(msg=queue.take())){
                System.out.println("Consumed item: "+ msg);
                Thread.sleep(15L);
            }
            System.out.println("Exit.");
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

    }

}

public class ProducerConsumerModel {
    public final static String EXIT_MSG="bye";
    public static void main(String[] args) {
        BlockingQueue<String> queue = new ArrayBlockingQueue<String>(5);
        Producer producer = new Producer(queue);
        Consumer consumer = new Consumer(queue);
        new Thread(producer).start();
        new Thread(consumer).start();
    }
}