sleep（）-T15

package 多线程技能1;
/**
 *sleep（）方法：在指定时间(毫秒)内让当前“正在执行的线程休眠（暂停执行），
 * 这个正在执行的线程是指由this.currentThread()返回的线程。
 */
class MyThreadSleep extends Thread{
    @Override
    public void run() {
        try {
            System.out.println("run threadName="+currentThread().getName()+"begin");
            Thread.sleep(2000);
            System.out.println("run threadName="+currentThread()+"end");
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}
class MyThreadSleep1 extends Thread{
    @Override
    public void run() {
        try {
            System.out.println("run threadName="+currentThread().getName()+"begin="+System.currentTimeMillis());
            Thread.sleep(2000);
            System.out.println("run threadName="+currentThread()+"end="+System.currentTimeMillis());
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}

public class T15 {
    public static void main(String[] args) {
        MyThreadSleep myThreadSleep=new MyThreadSleep();
        System.out.println("begin="+System.currentTimeMillis());
        myThreadSleep.run();
        System.out.println("end="+System.currentTimeMillis());
        System.out.println("---------------------");
        MyThreadSleep1 myThreadSleep1=new MyThreadSleep1();
        System.out.println("begin="+System.currentTimeMillis());
        myThreadSleep1.run();
        System.out.println("end="+System.currentTimeMillis());
        /*
        由于main线程与MyThreadSleep1线程是异步执行的，所以首先输出的信息为begin和end
        而MyThreadSleep线程是后运行的，在最后两行间隔2S输出run--begin和run---end相关信息。
         */
    }
}

本文地址：https://blog.csdn.net/qq_43834878/article/details/111962138