java实现有界队列

package com.cyq;import java.util.LinkedList;import java.util.concurrent.TimeUnit;import java.util.concurrent.atomic.AtomicInteger;/** * 有界队列的基本实现 */public class MyQueue {    private LinkedList<Object> list = new LinkedList<>();    private AtomicInteger count = new AtomicInteger(0);    private final int minSize = 0;    private int maxSize;    private final Object lock = new Object();    public MyQueue(int size) {        this.maxSize = size;    }    public void put(Object obj) {        synchronized (lock) {            while (count.get() == this.maxSize) {                try {                    lock.wait();                } catch (InterruptedException e) {                    e.printStackTrace();                }            }            list.add(obj);            count.incrementAndGet();            System.out.println("元素加入：" + obj);            lock.notify();        }    }    public Object take() {        Object obj = null;        synchronized (lock) {            while (count.get() == this.minSize) {                try {                    lock.wait();                } catch (InterruptedException e) {                    e.printStackTrace();                }            }            obj = list.removeFirst();            count.decrementAndGet();            System.out.println("元素拿出：" + obj);            lock.notify();        }        return obj;    }    public static void main(String[] args) {        final MyQueue mq = new MyQueue(4);        System.out.println("初始化四个元素");        mq.put("aa");        mq.put("bb");        mq.put("cc");        mq.put("dd");        System.out.println();        Thread t1 = new Thread(new Runnable() {            @Override            public void run() {                System.out.println("小明开始放元素了");                mq.put("ee");                mq.put("ff");            }        });        t1.start();        System.out.println();        Thread t2 = new Thread(new Runnable() {            @Override            public void run() {                System.out.println("小王开始拿元素了");                Object o1 = mq.take();                Object o2 = mq.take();            }        });        try {            TimeUnit.SECONDS.sleep(2);        } catch (InterruptedException e) {            e.printStackTrace();        }        t2.start();        try {            TimeUnit.SECONDS.sleep(1);        } catch (InterruptedException e) {            e.printStackTrace();        }        System.out.println();        System.out.println("队列中的元素：");        for (Object obj : mq.list) {            System.out.println(obj);        }    }}