Java, running external programs

Question

I am trying to write a chatbot. I am still in my startings, but I do have one question.

Process proc = Runtime.getRuntime().exec("notepad.exe");

This actually makes it impossible to quit my program, unless I quit the notepad. Is it possible to quit the Java program before this notepad has ended?

possible duplicate of What is Daemon thread in java

Greg Hewgill
– Greg Hewgill

2012-12-06 00:22:36 +00:00
Commented Dec 6, 2012 at 0:22 — Greg Hewgill
– Greg Hewgill, Commented Dec 6, 2012 at 0:22
Yes, but it's platform specific and very messy to achieve.

MadProgrammer
– MadProgrammer

2012-12-06 00:24:07 +00:00
Commented Dec 6, 2012 at 0:24 — MadProgrammer
– MadProgrammer, Commented Dec 6, 2012 at 0:24

Juvanis · Accepted Answer · 2012-12-06 00:22:10Z

1

You can run an external program via a separate thread in your program and continue your program logic in your main thread, i.e. a multi-threaded application is a good solution.

answered Dec 6, 2012 at 0:22

Juvanis

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Stefan Schouten Over a year ago

Even if the program runs in another thread, I can't quit the program. Does this mean that, if I want to run a big memory-eating program, like games like Skyrim, it's running in the Java application, thus terminating the Java-app process, means terminating the external program?

Ozgen · Accepted Answer · 2015-04-06 01:32:54Z

0

First destroy the subprocess :

Process proc = Runtime.getRuntime().exec("notepad.exe");
proc.destroy();

If this doesn't work, get the process id of the process and run a different subprocess to run kill <pid>

then exit java with System.exit(0); or normally.

answered Apr 6, 2015 at 1:32

Ozgen

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