Why do I have to run 'rebuild project' for every change in Intellij?

Question

For any change I made to my class, which contains a main() method, I have to run "Build->rebuild project", to make the changes effective. I am afraid my environment or settings have a problem.

Please help.

Answer 1

Please check that you still have Build step in the Before launch setting of the Run/Debug configuration. This is the default, but you could have removed it by accidentally clicking on the — icon.