java定时scheduleAtFixedRate

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1.新建一个java项目，里面新建两个java类，整体的框架如下图所示：

2.MyTimerTask.java里面的代码如下所示：

import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.TimerTask;public class MyTimerTask extends TimerTask {private static String name;public MyTimerTask(String inputName) {name = inputName;}@Overridepublic void run() {Calendar calendar = Calendar.getInstance();SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");System.out.println("Current exec time is:" + sf.format(calendar.getTime()));System.out.println("Current exec name is:" + name);}public static String getName() {return name;}public static void setName(String name) {MyTimerTask.name = name;}}

3.MyTimer.java里面的代码如下所示：

import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Timer;public class MyTimer {public static void main(String[] args) {Timer timer = new Timer();MyTimerTask myTimerTask = new MyTimerTask("Number 1.");Calendar calendar = Calendar.getInstance();SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");System.out.println(sf.format(calendar.getTime()));calendar.add(Calendar.SECOND, 3);myTimerTask.setName("scheduleAtFixedRate");// timer.scheduleAtFixedRate(myTimerTask, calendar.getTime(), 2000);timer.scheduleAtFixedRate(myTimerTask, 3000, 2000);}}

4.运行得到结果：

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