IntelliJ IDEA code analysis tool not working

Question

I'm a relatively new user of the IntelliJ IDEA, moved to it from Eclipse. It has been working fine for several months, but now the code analysis plugin that performs analysis and precompiles the code on the fly, fails to work. It shows errors where they've been already fixed, not importing classes correctly. Restarting IDEA, updating to latest version and so on doesn't help. Did anybody face such problems and how did you resolve them?

Answer 1

Issue seems resolved, overall there's a couple of things that you can do when something is not working properly in Intellij:

1. Close intellij, open again.
2. Try building the project
3. Try invalidating the Caches and Restarting from the "File" menu
4. If using Maven try reimporting all modules and re-generating sources, these 2 features are right next to each other in the "Maven Project" window.
5. If all fails, delete the whole project and reimport it (for maven open the project again through the pom.xml for gradle the the build.gradle etc).