How to define default JVM arguments in IDEA?

Question

Is there an option to define default JVM arguments in IntelliJ IDEA?

For example, I would like to always activate:

• -ea -Dslf4j.detectLoggerNameMismatch=true

In Eclipse, the option can be found in:

• Preferences -> Java -> Installed JREs -> Edit -> Default VM arguments

Answer 1

You have to do it per run type (Application, JUnit test, etc).

In the "edit configurations" window ("Run" ▸ "Edit Configurations..."), expand the "Defaults" item, select the appropriate run type, and edit its defaults in the left pane.

The full documentation is available in the IDEA docs.

Answer 2

You can set your VM options for all applications as a default by picking the application type (for command line Java programs it would be 'Application') under the 'Templates' tree found via the menu items Run/Edit Configurations... Then all new applications you create will use that default. Older versions of IntelliJ IDEA labeled that tree 'Defaults'.