JUC-Lock接口概述和实现案例

向右看齐 2024-04-06 09:49 89阅读 0赞

![361fda4635c04795bdd5dbce568cae80.png][]

![402d0d1bee014f18a4f9abe09d87daf9.png][]

![02e3638839f0495893aab46c2254ace4.png][]

![2dc6eab7a44f46f7a3fcb94da36f3f07.png][]![abd850744ce347db859640a20b72c6d4.png][]

package com.nanjing.juc;
    
    import java.util.concurrent.locks.ReentrantLock;
    
    class LockTicket{
        //票的数量
        private int number = 300;
        //创建可重入锁
        private final ReentrantLock lock = new ReentrantLock();
        //操作方法：卖票
        public void sale(){
            //上锁
            lock.lock();
            //判断是否有票
            try {
                if(number > 0){
                    System.out.println(Thread.currentThread().getName()+" ：卖出："+(number--)+" 剩下："+number);
                }
            } finally {
                //解锁
                lock.unlock();
            }
    
        }
    }
    
    public class LockSaleTicket_03 {
        //创建多个线程，调用资源类的操作方法
        public static void main(String[] args) {
            //创建LockTicket对象
            LockTicket lockTicket = new LockTicket();
            //创建三个线程
            /*new Thread(new Runnable() {
                @Override
                public void run() {
                    //调用卖票的方法
                    for (int i = 0; i < 300; i++) {
                        ticket.sale();
                    }
                }
            },"刘德华").start();*/
            
            //lambda写法
            new Thread(()->{
                for (int i = 0; i < 300; i++) {
                    lockTicket.sale();
                }
            },"刘德华").start();
    
            new Thread(()->{
                for (int i = 0; i < 300; i++) {
                    lockTicket.sale();
                }
            },"张学友").start();
    
            new Thread(()->{
                for (int i = 0; i < 300; i++) {
                    lockTicket.sale();
                }
            },"黎明").start();
    
        }
    }

![a0025adf04e441fea9ed9bfdbb4956f0.png][]

![d7ed0234ff84440895101e4692fbbdc4.png][]

![57576c96ef004209b757bac207add0ba.png][]

[361fda4635c04795bdd5dbce568cae80.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/06/dfd40031011542d29c3fd991fb69d588.png
[402d0d1bee014f18a4f9abe09d87daf9.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/06/cfa16ca17de0490abb2aa5fdbae5a7ea.png
[02e3638839f0495893aab46c2254ace4.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/06/454996df90bc4c3abd05e9fb13eea56c.png
[2dc6eab7a44f46f7a3fcb94da36f3f07.png]: https://img-blog.csdnimg.cn/2dc6eab7a44f46f7a3fcb94da36f3f07.png
[abd850744ce347db859640a20b72c6d4.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/06/3848483faa864604ad0c307c62b64ec3.png
[a0025adf04e441fea9ed9bfdbb4956f0.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/06/82c11d9513e24d0091b429806afc624e.png
[d7ed0234ff84440895101e4692fbbdc4.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/06/7c8c0aeb3f2b4c88b7249e50dbdc55f0.png
[57576c96ef004209b757bac207add0ba.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/06/13c680f31b2a4cdda859c0582365eec6.png