Thread_project/Thread_module/src/Thread_safe_package/MyThread2.java

package Thread_safe_package;

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

public class MyThread2 extends Thread {
    static int ticket = 0;

    static Lock lock = new ReentrantLock();

    @Override
    public void run() {
        while (true) {
            //同步代码块---锁对象：MyThread.class | obj
            lock.lock();
            if (ticket < 100) {
                try {
                    Thread.sleep(10);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }

                ticket++;
                System.out.println(getName() + "正在卖第" + ticket + "张票");
            } else {
                break;
            }
            lock.unlock();
        }

    }
}