If IntelliJ IDEA is showing a “can’t find symbol” error for a boolean field when using getter/setter annotations (like Lombok’s @Getter
and @Setter
), here are a few possible causes and solutions:
1. Check Lombok Plugin & Enable Annotation Processing
If you’re using Lombok, ensure the plugin is installed and annotation processing is enabled:
Step 1: Install Lombok Plugin
- Open IntelliJ IDEA.
- Go to Preferences (
⌘ ,
) > Plugins. - Search for
Lombok
and install it if not already installed. - Restart IntelliJ.
Step 2: Enable Annotation Processing
- Open Preferences (
⌘ ,
) > Build, Execution, Deployment > Compiler > Annotation Processors. - Check Enable annotation processing.
- Click Apply > OK and restart IntelliJ.
2. Rebuild the Project
Sometimes IntelliJ does not recognize generated code. Try these steps:
- Invalidate Cache & Restart
- Go to File > Invalidate Caches / Restart > Invalidate and Restart.
- Rebuild the project
- Use
⌘ F9
(Command + F9) or go to Build > Rebuild Project.
- Use
3. Check Field Naming and Lombok Behavior
Lombok follows JavaBean naming conventions, which may cause issues with boolean fields.
Issue: Boolean Field Starts with “is”
If your field is named isActive
:
@Getter
@Setter
private boolean isActive;
Lombok does not generate getIsActive()
. Instead, it generates isActive()
, which can cause issues.
Solution: Rename the Field
Change it to:
@Getter
@Setter
private boolean active; // Lombok will generate getActive() and setActive()
4. Check Dependencies (For Lombok Users)
Ensure you have Lombok dependency in pom.xml
(Maven) or build.gradle
(Gradle):
For Maven (pom.xml
)
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.30</version>
<scope>provided</scope>
</dependency>
For Gradle (build.gradle
)
dependencies {
compileOnly 'org.projectlombok:lombok:1.18.30'
annotationProcessor 'org.projectlombok:lombok:1.18.30'
}
Then reload the project (⌘ ⇧ I
in IntelliJ for Maven/Gradle).
5. Manually Define Getters/Setters
If Lombok isn’t working, manually define getters and setters:
private boolean isActive;
public boolean isActive() {
return isActive;
}
public void setActive(boolean active) {
this.isActive = active;
}
If it works manually but not with Lombok, the issue is with Lombok configuration.
Final Step: Check Compilation Errors
Run:
mvn clean compile
or
./gradlew clean build
If the error still persists, share the exact field and annotation you’re using!