Background thread in java

Question

I am new in java I am searching for a background thread in java which runs periodically even after the java desktop app is closed. I need a thing similar to Service in Android . I searched for it but I found just threads no service. I have to send data to the server which will be store in config.propertise file through that background Thread or Service. Thanks in Advance

http://stackoverflow.com/questions/68113/how-to-create-a-windows-service-from-java-app - Does this help? — BatScream, Nov 12 '14 at 06:35

score 5 · Answer 1 · edited May 23 '17 at 12:20

5

A thread is contained within a process, so it doesn't make sense to talk about threads that run after the app is closed.

You either want:

A separate service, like @BatScream suggested, which is a process that runs in the background without an app window connected to it.
A scheduled task that uses Windows scheduled tasks mechanism to run some process periodically. See Running a JAVA program as a scheduled task
Or you want your app to minimize to the tray. See How do I put a Java app in the system tray?

edited May 23 '17 at 12:20

Community

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answered Nov 12 '14 at 06:51

itsadok

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okay supppose I had made the Windows service following http://joerglenhard.wordpress.com/2012/05/29/build-windows-service-from-java-application-with-procrun/ Now where can I write the code which sends data to the server periodically even after the app is closed – Nov 12 '14 at 07:19

score 1 · Answer 2 · edited May 23 '17 at 12:12

1

You can achieve the same thing by using a timer class. O.w background services are here How to create a windows service from java app

edited May 23 '17 at 12:12

Community

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answered Nov 24 '14 at 10:05

score 0 · Accepted Answer · answered Nov 13 '14 at 08:14

0

I have a unusual way to do it. it work for me always. You have to do a certain task after the user close the app, Right??? . Just override the close button functionality and hide the window on close action. And continue your work in thread. When your work is finished close your app using

 System.exit

User will never know that the app is running in background.

answered Nov 13 '14 at 08:14

Syeda Zunaira

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There are better answers than this. Why is this the accepted answer or be worth a bounty? – Mike Laren Dec 12 '14 at 00:42
May be because he is doing this :) – Syeda Zunaira Dec 12 '14 at 05:23

ToYonos · Answer 4 · 2014-12-12T10:23:02.263

Base one this, create a Java program, which will be used as a service with Linux crontab or Windows scheduler.

public class SomeService
{
    // Your task will repeat itself periodically (here every minute), until it is stopped
    private static final int SLEEP_TIME = 60000;

    private static boolean stop = false;

    public static void start(String[] args)
    {
        System.out.println("start");
        while (!stop)
        {
            sendDataToServer();
            try
            {
                Thread.sleep(SLEEP_TIME);
            }
            catch (InterruptedException e) {}
        }
    }

    private void sendDataToServer()
    {
        // TODO your job here
    }

    public static void stop(String[] args)
    {
        System.out.println("stop");
        stop = true;
    }

    public static void main(String[] args)
    {
        if ("start".equals(args[0]))
        {
            start(args);
        }
        else if ("stop".equals(args[0]))
        {
            stop(args);
        }
    }
}

Background thread in java

4 Answers4