How can I start over if I’ve messed up my IntelliJ setup? #
See the how-to video ‘Start over your IntelliJ setup’.
How can I turn on distraction-free mode in IntelliJ? #
See this Stack overflow article.
Why do I get an error message
Class JavaLaunchHelper is implemented in both /Library/Java/JavaVirtualMachi...? #
This is a known bug in the current version of IntelliJ. For now you can safely ignore it.
Why can’t I click the Run button? #
If the run button is greyed out, but you can otherwise run your code in debug mode or run with coverage, then try restarting IntelliJ.