卖票用lock实现线程安全案例

package Thread.synchronizedDemo;

/**
 * FileName: SellTicketDemo
 * Author:   lps
 * Date:     2022/3/31 14:41
 * Sign:刘品水 Q：1944900433
 */
public class SellTicketDemo {
    public static void main(String[] args) {
        SellTicket ticket = new SellTicket();

        Thread thread1 = new Thread(ticket,"刘品水");
        Thread thread2 = new Thread(ticket,"刘品水");
        Thread thread3 = new Thread(ticket,"刘品水");
        thread1.start();
        thread2.start();
        thread3.start();

    }
}

package Thread.synchronizedDemo;

import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

/**
 * FileName: SellTicket
 * Author:   lps
 * Date:     2022/3/31 14:41
 * Sign:刘品水 Q：1944900433
 */
public class SellTicket implements Runnable{
    private int number=100;
    private Lock lock=new ReentrantLock();
    @Override
    public void run() {
        while (true){
            try {
                lock.lock();
                if (number>0){

                    try {

                        Thread.sleep(50);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    System.out.println(Thread.currentThread().getName()+"正在卖第"+number--+"张票");
                }
            }finally {
                lock.unlock();
            }


        }

    }
}