【java多線程】生產者消費者之ArrayBlockingQueue實現

package com.thread.blockingqueue.test2;

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

public class ProducerConsumerService {
    public static void main(String[] args) {
        //建立大小爲10的 BlockingQueue 
        BlockingQueue<Message> queue = new ArrayBlockingQueue<>(10);
        Producer producer = new Producer(queue); //這裏Thread.sleep(500);的休眠時間大於Consumer的時間
        Consumer consumer = new Consumer(queue);
        //開啓 producer線程向隊列中生產消息
        new Thread(producer).start();
        //開啓 consumer線程 中隊列中消費消息
        new Thread(consumer).start();
        System.out.println("Producer and Consumer has been started");
    }
 
}

package com.thread.blockingqueue.test2;

import java.util.concurrent.BlockingQueue;
public class Producer implements Runnable {
 
    private BlockingQueue<Message> queue;
     
    public Producer(BlockingQueue<Message> q){
        this.queue=q;
    }
    @Override
    public void run() {
        //生產消息
        for(int i=0; i<50; i++){
            Message msg = new Message(""+i);
            try {
                Thread.sleep(500);
                queue.put(msg);
                System.out.println("Produced "+msg.getMsg());
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        //添加退出消息
        Message msg = new Message("exit");
        try {
            queue.put(msg);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}

package com.thread.blockingqueue.test2;

import java.util.concurrent.BlockingQueue;

public class Consumer implements Runnable {
	private BlockingQueue<Message> queue;

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

	@Override
	public void run() {
		try {
			Message msg;
			// 獲取並處理消息直到接收到「exit」消息   
			while ((msg = queue.take()).getMsg() != "exit") {
				Thread.sleep(10);
				System.out.println("Consumed " + msg.getMsg());
			}
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
	}
}

package com.thread.blockingqueue.test2;


public class Message {
    private String msg;
     
    public Message(String str){
        this.msg=str;
    }
 
    public String getMsg() {
        return msg;
    }
 
}