Can one Java app return String[] to other Java app ?

I writed 2 applications.
One can trigger another to run ( System.exec(...) )
After finish, the second app needs return String[].
How I return the value ?
Any suggestion is welcome.

What are you trying to do?
Streaming data output as piping? OR
Two running apps communication? OR
One app calling another? OR .....

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Can one Java app return String[] to other Java app ?

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