Can’t compile project when I’m using Lombok under IntelliJ IDEA

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I have fixed it in IDEA 12 by setting check box Enable annotation processing in:

Settings -> Compiler -> Annotation Processors

For IDEA 2016.2:

Preferences… > Build, Execution, Deployment > Compiler > Annotation Processors

After enabling, run Build -> Rebuild Project to have annotations recognized and eliminate errors.

For IDEA 2019.2.1, depending on how the project is configured, installing the Project Lombok plugin may not be sufficient. Here is another way to use Project Lombok with IntelliJ IDEA:

  1. Visit https://projectlombok.org/download
  2. Download the JAR file into the project lib directory (e.g., $HOME/dev/java/project/libs).
  3. Start the IDE.
  4. Click File 🠖 Settings.
  5. Expand Build, Execution, Deployment 🠖 Compiler 🠖 Annotation Processors.
  6. Ensure Enable annotation processing is checked.
  7. Ensure Store generates sources relative to is selected based on the project’s module settings (if Module output directory doesn’t work, come back and try the other setting).
  8. Click Apply.
  9. Click Plugins.
  10. Click Marketplace.
  11. Set search field to: lombok
  12. Install Lombok.
  13. Click OK.
  14. Restart the IDE if prompted.
  15. Click File 🠖 Project Structure.
  16. Select Libraries.
  17. Click the + symbol to add a new project library (or press Alt+Insert).
  18. Select Java.
  19. Set the path to: $HOME/dev/java/project/libs/lombok.jar
  20. Click OK.
  21. Select the modules to apply.
  22. Click OK.
  23. Optionally, rename lombok to Project Lombok 1.18.8.
  24. Click OK.

The project can now import from the lombok package and use Project Lombok annotations (e.g., lombok.Setter and lombok.Getter).

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