how to specify maven compiler plugin order

Question

I\'m working on a mixed java and kotlin project by using maven.

The problem I\'m facing right now is, maven-compiler-plugin runs before compiling kotl

Answer 1

A simple but effective solution would be to change the two phases (the element) applied to the executions of the Kotlin Maven Plugin, from compile to process-sources and from test-compile to process-test-sources.

You want the Kotlin part to be executed before the Java one. Maven by default will invoke the Maven Compiler Plugin as part of the compile phase for source code, and test-compile for test code. Moving the Kotlin part to their previous phases would then make the flow as you wished.

If you wanted the opposite (first Java then Kotlin), then you could have moved the Kotlin part to the next phases (as an example: from compile to process-classes and from test-compile to process-test-classes).

For further details about Maven phases, check the official documentation.