java定时schedule(task,delay)

java定时schedule(task,delay)

1.新建一个java项目，里面新建两个类，整体的框架如图所示：

2.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("schedule"); // schedule(task,delay)等待delay之后执行且执行一次task timer.schedule(myTimerTask, 1000); } } 3.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; } @Override public 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; } } 4.运行得到定时结果：