java多线程实现 5秒一次打印当前时间

Question

java多线程实现 5秒一次打印当前时间，写个方法，就这么简单！

Answer 1

import java.util.Date;public class PrintTime {
public static void main(String[] args) {
while (true) {
System.out.println(new Date());
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}

Answer 2

package com.MyThread;import java.text.SimpleDateFormat;
import java.util.Date;public class TimeThread extends Thread { public void run() { while (true) {
try {
sleep(5000); } catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Date date = new Date();
SimpleDateFormat dfm = new SimpleDateFormat("hh:mm:ss");
System.out.println(dfm.format(date));
}
} public static void main(String[] args) {
TimeThread tr = new TimeThread();
tr.start(); }}