Eclipse 2020-12 (Eclipse 2020-12 Java) does not support Lombok. It runs fine, but the IDE shows errors for all Lombok generates getters/setters. The previous version of Eclipse work fine. You have to install lombok on your installation, otherwise Eclipse will not be able to handle the Lombok-Annotations.
Getters and Setters play an important role in retrieving and updating the value of a variable outside the encapsulating class. A setter updates the value of a variable, while a getter reads the value of a variable.
When starting with a fresh eclipse installation you, in fact, need to "install" Lombok before being able to use it.
~/.m2/repository/org/projectlombok/lombok/1.16.10/lombok-1.16.10.jar
), run it (Example: java -jar lombok-1.16.10.jar
). A window should appear, browse to your eclipse.exe
location.If you use STS. You must have Lombok installed in your Eclipse by running lombok-xyz.jar
Please Try the Following the Steps:
From Command Prompt/Shell java -jar lombok-1.x.y.jar
Start STS
Thats all.
EDIT: I did this and was still showing errors, as mentioned in the comments. So I updated the project: right-click on project -> Maven -> Update Project and the errors disappeared.
Note that if you're using IntelliJ, you'll want to install the Lombok plugin (available from IDE settings) and also enable annotation processing.
Download Lombok Jar, let’s maven do the download on our behalf :
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.18</version>
</dependency>
Now... mvn clean install command on the newly created project to get this jar downloaded in local repository. Goto the jar location, execute the command prompt, run the command : java -jar lombok-1.16.18.jar
click on the “Specify Location” button and locate the eclipse.exe path LIKE :
finally install this by clicking the “Install/Update”
If you use eclipse. You must have lombok installed in your Eclipse by running lombok-xyz.jar (e.g. you can find in ~/.m2/repository/org/projectlombok/lombok/1.12.6/lombok-1.12.6.jar
).
As the window of installation opened, you must choose the location of your Eclipse. And let it install lombok inside. You must restart your Eclipse afterwards.
These are command line instructions where the above Graphical version is not available or you can not open the Lombok jar file by double clicks, like in Ubuntu.
At the time of writing using Lombok is not straightforward as just adding a dependency in your POM xml file and adding the annotation. These are the next steps:
1) Locate where your Lombok jar file is downloaded by maven; Usually it is in .m2 folder inside your home directory. Then execute the following command.
java -jar lombok-1.16.18.jar install <path of where your IDE is installed>
example usage:
java -jar lombok-x.xx.xx.jar install ~/Downloads/spring-tool-suite-3.9.1.RELEASE-e4.7.1a-linux-gtk-x86_64/sts-bundle/sts-3.9.1.RELEASE/
the above command basically makes a configuration update in your IDE .ini
or configuration
file something like below:
-javaagent:/home/neshant/Downloads/spring-tool-suite-3.9.1.RELEASE-e4.7.1a-linux-gtk-x86_64/sts-bundle/sts-3.9.1.RELEASE/lombok.jar
this ensures that the @Data
or @Getter
or @Setter
annotations are understood by the IDE. It is weird that it had to be so complex.
If you are using maven and Eclipse, must be installed manually.
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.10</version>
<type>jar</type>
</dependency>
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