使用messageQueue作为生产者消费者

使用queue作为线程间通信的方式，并wait()/notifyAll()

package org.example.concurrency.test;
import lombok.extern.slf4j.Slf4j;
import java.util.LinkedList;
import java.util.concurrent.TimeUnit;
/**
 * @author huskyui
 */
@Slf4j
public class Test21 {
    public static void main(String[] args) {
        MessageQueue messageQueue = new MessageQueue(2);
        for (int i = 0;i<3;i++){
            Message message = new Message(i,"message"+i);
            new Thread(()->{
                messageQueue.put(message);
            },"生产者"+i).start();
        }
        new Thread(()->{
            while (true) {
                try {
                    TimeUnit.SECONDS.sleep(2);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                Message message = messageQueue.take();
                System.out.println(message);
            }
        },"消费者").start();
    }
}
@Slf4j
class MessageQueue {
    private LinkedList<Message> list = new LinkedList<>();
    private int capacity;
    public MessageQueue(int capacity){
        this.capacity = capacity;
    }
    public Message take(){
        synchronized (list){
            while (list.isEmpty()){
                try {
                    log.info("当前消息队列消息为空");
                    list.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            Message message = list.removeLast();
            log.info("接受消息");
            list.notifyAll();
            return message;
        }
    }
    public void put(Message message){
        synchronized (list){
            while (list.size() >= capacity){
                try {
                    log.info("当前队列已满");
                    list.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            list.addFirst(message);
            log.info("放入信息{}",message);
            list.notifyAll();
        }
    }
}
class Message {
    private int id;
    private Object value;
    public int getId() {
        return id;
    }
    public Object getValue() {
        return value;
    }
    public Message(int id, Object value) {
        this.id = id;
        this.value = value;
    }
    @Override
    public String toString() {
        return "Message{" +
                "id=" + id +
                ", value=" + value +
                '}';
    }
}