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Creating a process from Java

Karthikeyan Chandrasekaran
Greenhorn

Joined: Feb 10, 2006
Posts: 15
Hi All,

I have a swing GUI from which i am calling a batch file using RunTime.exec() . That batch file will kill and restart the GUI. But when it kills the GUI it itself got killed. So GUI is not coming up. Please let me know how to overcome this issue?
Shaan Shar
Ranch Hand

Joined: Dec 27, 2005
Posts: 1249

Originally posted by Karthikeyan Chandrasekaran:
Hi All,

I have a swing GUI from which i am calling a batch file using RunTime.exec() . That batch file will kill and restart the GUI. But when it kills the GUI it itself got killed. So GUI is not coming up. Please let me know how to overcome this issue?


Please share the code of Batch file so that we can check whether what you have coded in that program.

what do you mean by "restart the GUI" does that means starting the application from where it was called or restart the GUI.

If you want to restart the GUI from the scratch again then you have to simply write a line
java GUIApplicationClass

else otherwise let us see the code first.


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Henry Wong
author
Sheriff

Joined: Sep 28, 2004
Posts: 18509
    
  40

This is actually pretty common with many Operating Systems. When a process gets killed, the operating system may go after it's children too.

There is no one answer that will work in all cases... but some options include have the child protect itself from kill signals, detach from parent by closing stdin and stdout, executing another script, etc.

Henry


Books: Java Threads, 3rd Edition, Jini in a Nutshell, and Java Gems (contributor)
Karthikeyan Chandrasekaran
Greenhorn

Joined: Feb 10, 2006
Posts: 15
Could you let me know how to create a detached(from parent) independant process from java?
 
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