Java application does not use the right PATH environment variable

Question

I've been struggling to find a reason why my Java application does not use the default PATH environment variable. I need it to launch another program with ProcessBuilder. Right now I get "Cannot run program "..." error=2, No such file or directory", though I can run this program from the terminal. I'm using JDK 1.8, Netbeans 8.1, OS X.

Here's the output of System.out.println(System.getenv("PATH"));: /usr/bin:/bin:/usr/sbin:/sbin

The actual value of PATH in the terminal (using echo $PATH) is much longer and contains the paths to the desired executables.

I found some questions treating on the same subject but none could help me with this.

Any help appreciated!

Still in development phase so I'm using Netbeans - Run project. Should I launch it without the IDE? — Max H.
– Max H., Commented Mar 7, 2016 at 20:24
Damn! You're right. It now uses the correct PATH variable - my executable is launched. Thank you very much for this. Any idea on how to set the environment variables in Netbeans? Couldn't find much info on this! — Max H.
– Max H., Commented Mar 7, 2016 at 20:47

Scott Sosna · Accepted Answer · 2016-03-08 02:43:43Z

1

PATH is created by whatever shell you're running, but ProcessBuilder does notrun within a shell and therefore there isn't a PATH to attach to, to resolve your program names. You can provide an environment to ProcessBuilder, but don't believe it's going to let you find your program that's in the PATH. In a project of mine I had to provide a fully-qualified path.]

[NOTE: Mileage may vary, I seem to remember having somewhat different results between Windows and *nix, and between different *xix.]

answered Mar 8, 2016 at 2:43

Scott Sosna

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