package Thread;

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

public class TestSleep
...{
    public static void main(String[] args)
    ...{
        new MyThread().start();
    }
}

class MyThread extends Thread
...{
    public void run()
    ...{
        while(true)
        ...{
            SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
            String date = "现在时间是-->"+sdf.format(new Date());
            System.out.println("****"+date+"****");
            try
            ...{
                sleep(1000);
            }
            catch(InterruptedException ie)
            ...{
                return;
            }
        }
    }
}