IDEA JetBrains IntelliJ - Compile error on 'make' but fine when compiled using Maven and no errors reported by IntelliJ in the class file

user_124426 0
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So I have a maven module (module-A) in IntelliJ. I recently moved some classes from it into another new maven module (module-B) and added a dependency to it. Once I had done this I also modified the signature of a method of one of the moved classes (now in module-B).

I re-imported the poms so that IntelliJ would pick up the dependency changes and ensured all Java imports for the affected files were correct again. Now when I attempt to run my webapp (which depends on the two modules) I get a compile error in a class in module-A calling the modified method of the class in module-B.

The error message is basically saying that that method doesn't exist but believes the old method still exists! I click on the 'make' error and it takes me to the line in a class in module-A calling the modified method...the weird thing is, IntelliJ knows it is fine in the file. i.e. The method is not underlined in red like a compile error would normally be, but the class file name is :(

I compiled it from the command line using 'mvn install' (having also installed module-B) and it is all successful. I have deleted the classes directory in the target of both module-A and module-B and also invalidated IntelliJ's caches and restarted...still happening...any ideas?

compilation intellij-idea maven-2 java
22 Answers

This could happen if you are using different version of java while building outside IntelljJ. My IntelliJ had java10 and I was using java8 while building at terminal. Changing java version to IntelliJ fixed this issue for me.

user_6494510

None of the above answers worked for me.

In my case, I had to finally create an explicit Maven Run Configuration for the module (with Command Line as "clean install") and then run it.

It is in Run > Edit Configurations

user_2488470
  1. close the project
  2. go-to the project folder and delete idea project file and .iws file
  3. run mvn idea:idea
  4. restart the project.

seems idea keeping the old project dependencies without cleaning even though we run file -> invalidate caches

user_89377920

Setting the proper Java SDK solves the issue

  • Right click on the project and select "Open Module Settings"
  • Check if you have the right Java SDK under platform settings enter image description here
  • Check the SDK under Modules enter image description here
  • Rebuild the project from "Build" menu
user_26685640

Delete the installation directory.

Remove the following directories:

~/.config/JetBrains/

~/.cache/JetBrains/

~/.local/share/JetBrains/

This will remove each and every configuration plus installation of jetbrains tools, be it IDEA, goland,etc. Now install everything from scratch. That's the only way it worked for me

user_154691440
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