多线程-lock锁

package 多线程.lock锁;

import java.util.concurrent.locks.ReentrantLock;

/*、
*
* //同步代码块
*
* */
public class Sale implements Runnable {
    private int m = 10;
    private  ReentrantLock  relock =  new ReentrantLock();
    boolean f =true;
    @Override
    public void run() {
        //保证每一个线程都必须完成，其他线程才能抢  使用同步锁 出现共享变量都要加锁  多个线程必须持有同一个锁
        while (f) {
            relock.lock();
                if(m > 0) {
                    System.out.println(Thread.currentThread().getName() + "卖票---" + (m--) + "张");
                }else {
                    f =false;
                }
            relock.unlock();
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}

package 多线程.lock锁;

import 多线程.synchronized锁.Sale2;

public class Demo02 {
    public static void main(String[] args) throws InterruptedException {
        Sale sale = new Sale();

        Thread t1 =new Thread(sale,"窗口1");
        Thread t2 =new Thread(sale,"窗口2");
        Thread t3 =new Thread(sale,"窗口3");


        t1.setDaemon(true);//将该线程标记为守护线程或用户线程。
        t1.start();
        t1.yield();
        t1.join(10);//等待该线程终止
        System.out.println(t2.getPriority());//默认优先级为5
        t2.setPriority(7);//更改线程的优先级。
        t2.start();
        t3.start();
    }
}