B4J Question NON UI App - javaw.exe in Task Manager

Jmu5667 · Jan 11, 2017

Hello All

We have developed a NON UI server app. First of many

My question is, can the name be changed so in task manager it can be easy to identify which server app is running.

I have tried Launch4J but it does not do it. The jar file is not run as a console app.

Regards

John.

Roycefer · Jan 11, 2017

The jAWTRobot library can give you your server's processID. This will help you determine what to kill in Task Manager.

Additionally, you should download Process Explorer from sysinternals.com. It is a far superior version of Task Manager that shows you the full command that spawned a process, which other process spawned it, the working directory, etc... Using that, it's a pretty simple matter to determine which java process is which.

Erel · Jan 12, 2017

If you only need it for yourself then you can also use jps (<java jdk>\bin) to get more information about the running Java processes.

It is very useful.

B4X:

jps -l

Jmu5667 · Jan 12, 2017

thanks for the reply's. It not exactly what I am looking for. We are re-developing all our servers apps in B4J (leap of faith) and our system can be offered as a cloud service or deployed as an in house service to our customer base. At the moment when we look at task manager we can see what .exe's are running, but with b4j it is not that easy. So if a server app needs to be restarted for what ever reason we wont be able to identify which one it is.

I thought the maybe a command arg to app to the app that would mask the javaw.exe name with another.

Regards

John

jmon · Jan 12, 2017

if you are running windows, you could package the app into an .exe file with javaPackager:
https://www.b4x.com/android/forum/threads/ui-apps-packaging-self-contained-installers.56854/

This way in the task manager you will see "myapp.exe"

Roycefer · Jan 12, 2017

The jAWTRobot library has a few functions that allow you to restart the app programmatically.

Jmu5667 · Jan 12, 2017

jmon said:
if you are running windows, you could package the app into an .exe file with javaPackager:
https://www.b4x.com/android/forum/threads/ui-apps-packaging-self-contained-installers.56854/

This way in the task manager you will see "myapp.exe"

I tried that yesterday and it would appear to only work for GUI, not Non GUI.

Jmu5667 · Jan 12, 2017

Maybe there is something here, http://stackoverflow.com/questions/1057247/how-can-i-set-the-process-name-for-a-java-program or here, https://github.com/airlift/procname .

I am not a java expert by any means, but I do believe it should be possible. There is mention a -Dmyprocessname command arg in the first link

Erel · Jan 12, 2017

If you can assure that the JDK will be installed on the clients then you can create a small B4J UI app that will call JPS and show the running servers.

You can use it as a server manager program.

Jmu5667 · Jan 12, 2017

Erel said:
If you can assure that the JDK will be installed on the clients then you can create a small B4J UI app that will call JPS and show the running servers.

You can use it as a server manager program.

Mmmm...interesting idea !

B4J Question NON UI App - javaw.exe in Task Manager

Jmu5667

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Roycefer

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Erel

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Jmu5667

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jmon

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Roycefer

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Jmu5667

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Jmu5667

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Erel

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