java checking pid

[Wil]

I want to check the pid of a different program using java if possible.

Basically I need to know if another process or application is running
on the same machine and when it stops running. I would like to check
it's status every few seconds or so.

I don't know if this is possible to do in java. I might have to use
the native interface or something else.

Thank you,
Wil

 

[Roedy Green]

I don't know if this is possible to do in java. I might have to use
the native interface or something else.

you can exec something that understands PIDs or you can JNI. It is
not something universally supported, so is not part of the Java
library.

see http://mindprod.com/jgloss/exec.html
http://mindprod.com/jgloss/jni.html

 

[nos]

write a shell script or simple program that
puts the status in a file or maybe use two
files if you need one to act as a flag

Then in java you just check the file(s).