Java execute command in OSX

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I have a command that works no problem when typed into the terminal although I would like to execute it from a java program.

I am using this code where "homedir" was found from typing in the terminal which spark.

String homedir = "/usr/local/bin/spark";
File wd = new File(homedir);
Process pwd = Runtime.getRuntime().exec("spark", null, wd);

When I run the code though I still get an error: Cannot run program "spark" (in directory "/usr/local/bin"): error=2, No such file or directory

What am I missing that is stopping this from working?

asked 36 secs ago

Stud Beefpile

3

Java execute command in OSX