package Thread;

//解决线程安全问题方式三：Lock

import java.util.concurrent.locks.ReentrantLock;

class WindowLock implements Runnable{

private int ticket = 100;

//1.实例化ReentrantLock

private ReentrantLock lock = new ReentrantLock();

@Override

public void run() {

while(true){

try{

//2.调用锁定方法lock（）

lock.lock();

if(ticket > 0){

try {

Thread.sleep(100);

}catch (InterruptedException e){

e.printStackTrace();

}

System.out.println(Thread.currentThread().getName() + ":卖票，票号为：" + ticket);

ticket--;

}else {

break;

}

}finally {

//3.调用解锁方法unlock（）

lock.unlock();

}

}

}

}

public class LockTest1 {

public static void main(String[] args) {

WindowLock wl = new WindowLock();

Thread t1 =new Thread(wl);

Thread t2 =new Thread(wl);

Thread t3 =new Thread(wl);

t1.setName("窗口1");

t2.setName("窗口2");

t3.setName("窗口3");

t1.start();

t2.start();

t3.start();

}

}