如何在java中的特定时间调用方法？ [英] How to call a method on specific time in java?

问题描述

是否可以在特定时间调用java中的方法？例如，我有一段这样的代码：

Is it possible to call a method in java at specific time? For examplef I have a piece of code like this:

class Test{
 ....
// parameters 
....

public static void main(String args[]) {
   // here i want to call foo at : 2012-07-06 13:05:45 for instance
  foo();
}
}

如何在java中完成此操作？

How this can be done in java?

推荐答案

使用 java.util.Timer 类，您可以创建一个计时器并安排它在特定时间运行。

Using a java.util.Timer class you can create a timer and schedule it to run at specific time.

以下是示例：

//The task which you want to execute
private static class MyTimeTask extends TimerTask
{

    public void run()
    {
        //write your code here
    }
}

public static void main(String[] args) {

    //the Date and time at which you want to execute
    DateFormat dateFormatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    Date date = dateFormatter .parse("2012-07-06 13:05:45");

    //Now create the time and schedule it
    Timer timer = new Timer();

    //Use this if you want to execute it once
    timer.schedule(new MyTimeTask(), date);

    //Use this if you want to execute it repeatedly
    //int period = 10000;//10secs
    //timer.schedule(new MyTimeTask(), date, period );
}

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