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In my project configuration in IDEA, I have the following text fields:
I would like to define some environment variables, and refer to them in the fields "VM options" and "Program arguments".
I tried with the following definitions for environment variables:
MY_FOLDER=/some/random/path MY_ARGUMENT=2 and then in "VM options" I entered:
-Dfoo=$MY_FOLDER
and in program arguments I entered
$MY_ARGUMENT foo bar However, the environment variables do not seem to be resolved prior to calling my class, i.e. if I inspect args[0] in Java, it holds the string value $MY_ARGUMENT, not 2.
Why? and how can I fix this?
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Program Argument: Program arguments are arguments that are passed to your application, which are accessible via the "args" String array parameter of your main method. VM Argument: VM arguments are environment or system argument that needed by JVM to execute the program.
VM arguments are typically values that change the behaviour of the Java Virtual Machine (JVM). For example, the -Xmx256M argument allows the Java heap to grow to 256MB. The Eclipse runtime is also configurable via many system properties which can be passed as VM arguments in the form: -DpropertyName=propertyValue.
From the main menu, select Help | Edit Custom VM Options. If you do not have any project open, on the Welcome screen, click Configure and then Edit Custom VM Options. If you cannot start IntelliJ IDEA, manually copy the default file with JVM options to the IntelliJ IDEA configuration directory.
You can access environment variables using the brace-enclosed environment variable syntax. Example:
VM options: -Dfoo=${MY_ENV_VAR}
MY_ENV_VAR environment variable will be expanded properly.
Update: tested in IntelliJ IDEA 2017.1.2 and still working.
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