Can't Compile Project When I'm Using Lombok Under Intellij Idea

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

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.

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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).

Can't compile project with Lombok in IntelliJ IDEA

Here are the steps:

1. I updated the lombok plugin version:

File -> Settings -> Plugins -> Updates

2. Restart IDE.
3. Download the lombok JAR
4. Run this command:

mvn install:install-file -DgroupId=org.projectlombok -DartifactId=lombok -Dversion=1.1.18 -Dpackaging=jar -Dfile=/path/to/file

IntelliJ IDEA cannot see Lombok generated code

You need to enable the annotation preprocessor.
See documentation here.

Additionally you should install the lombok plugin if not done already

java: You aren't using a compiler supported by lombok, so lombok will not work and has been disabled

Using lombok 1.18.16 did not work for me. I added the argument below in the build process VM options in

-Djps.track.ap.dependencies=false

Setting:-

Build, Execution, Deployment -> Compiler -> Shared build process VM
options

and it worked
https://github.com/rzwitserloot/lombok/issues/2592

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

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).

Lombok added but getters and setters not recognized in Intellij IDEA

I fixed it by ticking the "Enable annotation processing" checkbox in Settings->Compiler->Annotation Processors.

Along with this you might also need to install lombok plugin as mentioned in @X.Chen's answer for new versions of IntelliJ Idea.

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