JAVA EE: Timer and TimerTask Intro V2 | How to schedule a task once or repeated using Timer and TimerTask

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Timer and TimerTask Intro V2 | How to schedule a task once or repeated using Timer and TimerTask

CleanUpTask.java

import java.util.TimerTask;

public class CleanUpTask extends TimerTask

{

    public void run()

    {

        System.out.println("Clean up files...");

    }

}

EmailTask.java

import java.util.TimerTask;

public class EmailTask extends TimerTask

{

    public void run()

    {

        System.out.println("Send emails..");

    }

}

TimerDemo.java

import java.util.Timer;

import java.util.TimerTask;

public class TimerDemo

{

    public static void main(String[] args) throws InterruptedException

    {

        Timer timer = new Timer();

        TimerTask cleanUpTask = new CleanUpTask();

        TimerTask emailTask = new EmailTask();

        /*
         * One time execution
         */

        timer.schedule(emailTask, 3000);

        /*
         * Repeated execution
         */

        timer.schedule(cleanUpTask, 5000, 2000);

        System.out.println("Timer has schedule the tasks...");

    }

}

Output

Timer has schedule the tasks...

Send emails..

Clean up files...

Clean up files...

Clean up files...

Clean up files...

Clean up files...

Clean up files...

Clean up files...

Clean up files...

Clean up files...

Clean up files...

Clean up files...