java定时schedule(task,delay,period)
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2025-01-08 18:14:22
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：
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import java.text.SimpleDateFormat;
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import java.util.Calendar;
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import java.util.Timer;
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public class MyTimer {
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public static void main(String[] args) {
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Timer timer = new Timer();
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MyTimerTask myTimerTask = new MyTimerTask("Number 1.");
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Calendar calendar = Calendar.getInstance();
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SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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System.out.println(sf.format(calendar.getTime()));
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calendar.add(Calendar.SECOND, 3);
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myTimerTask.setName("schedule");
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// schedule(task,delay,period)等待delay之后执行且执行一次task，之后每隔period执行一次task
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timer.schedule(myTimerTask, 1000, 2000);
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}
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}
3.MyTimerTask.java里面的代码如下所示：
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import java.text.SimpleDateFormat;
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import java.util.Calendar;
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import java.util.TimerTask;
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public class MyTimerTask extends TimerTask {
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private static String name;
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public MyTimerTask(String inputName) {
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name = inputName;
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}
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@Override
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public void run() {
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Calendar calendar = Calendar.getInstance();
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SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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System.out.println("Current exec time is:" + sf.format(calendar.getTime()));
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System.out.println("Current exec name is:" + name);
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}
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public static String getName() {
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return name;
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}
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public static void setName(String name) {
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MyTimerTask.name = name;
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}
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}
4.运行得到定时结果：
