线程中的sleep

package com.com.Prioity;

import java.text.SimpleDateFormat;
import java.util.Date;

public class MyThread extends Thread{

    @Override
    public void run() {
        while (true){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date d = new Date();
        System.out.println(sdf.format(d));
            try {
                Thread.sleep(1000);//睡一秒钟
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
    public static void main(String[] args) {
            MyThread mt= new MyThread();
            mt.start();
    }
}

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