I am running a Java application from the command line. Can I specify a command line argument to set the current running directory to something other than where the application is actually going to run?
There is a JVM argument -Duser.dir which can be used to set working directory for JVM.
If it all possible I would rather use a script to run the java application and set the directory in the script:
#!/bin/sh
cd <your dir>
java <some arguments>
The JNI-solution may affect all kinds of relative paths in your application; for examples the classpath you put in.
If you want to change the current directory, you'll have to use JNI and invoke a native API from your Java code. For example, for Windows you would use SetCurrentDirectory
I found this SO post and it helped me solve my problem. Though I wanted to share something specific about IntelliJ that might trip somebody else up.
I have posted a picture below where the -Duser.dir flag is used and also the Working Directory text field is filled in.
In this situation, the Working Directory will be set to "JarLearning" rather than "2ndTry".
来源：https://stackoverflow.com/questions/4442722/can-you-set-the-current-running-directory-from-the-java-command-line