Lock

可重入锁用法

对比

TestLock

package com.guo.gaoji;

import java.util.concurrent.locks.ReentrantLock;

//测试Lock锁
public class TestLock {

    public static void main(String[] args) {

        TestLock2 testLock2 = new TestLock2();

        new Thread(testLock2,"可爱的李悦" ).start();
        new Thread(testLock2,"帅气的陈果" ).start();
        new Thread(testLock2,"操蛋的黄牛" ).start();

    }
}



class TestLock2 implements Runnable{

    int ticketNums = 100;

    //定义可重入锁 ReentrantLock
    private final ReentrantLock lock = new ReentrantLock();

    @Override
    public void run() {
        while (true){

            try {
                //加锁
                lock.lock();
                if (ticketNums>0){
                    System.out.println(Thread.currentThread().getName()+"-->抢到了第"+ticketNums--+"张票");
                    try {
                        Thread.sleep(10);
                    } catch (InterruptedException e) {
                        throw new RuntimeException(e);
                    }
                }else {
                    break;
                }
            }finally {
                //解锁
                lock.unlock();
            }

        }
    }
}