测试5

package DEMO01;


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

public class Demo5 {
    public static void main(String[] args) {
        while (true){
            Date date = new Date();
            SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
            System.out.println(sdf.format(date));
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

}