I have the following class: When the @Builder annotation exists, it is causing problems with the @NoArgsConstructor. I am getting the error: Answer Add @AllArgsConstructor as well and this should fix the issue
Tag: lombok
Is using id field in @AllArgsConstructor while using Spring JPA correct?
Using spring-boot and JPA I have an Entity I want to use lombok to reduce boilerplate code. However in my entity there is the id field. Shall I put it in the constructor arguments with @AllArgsConstructor or shall I eliminate it from theargument list (somehow, how?) due to being auto-generated with the @id an…
What is the difference between AccessLevel.PACKAGE and AccessLevel.MODULE?
In Lombok, what is the actual difference between and ? Answer That is a good question. I tried creating some setters for some test methods and all I got was (decompiled): So, on first look it appears that there is no difference. So, I looked into the source code and all I could verify is that for the time bei…
Is there a Lombok way to initialise a final field that is calculated from other fields?
I’m using Lombok to minimize code. Here’s my (contrived) situation in vanilla Java: I want to use lombok to generate the constructor and getters: To get the computation into the class, you might consider an instance block: but instance blocks are executed before code in the constructor executes, s…
Build an object from an existing one using lombok
Lets say I have a lombok annotated class like I know I can do: Is there an easy way to create an object of Foo using the existing object as a template and changing one of it’s properties? Something like: I can’t find this in the lombok documentation. Answer You can use the toBuilder parameter to g…
Initialize list if list is null with lombok getter?
I am currently replacing all my standard POJO’s to use Lombok for all the boilerplate code. I find myself keeping getters for lists because I want to return an empty list if the list has not been initialized. That is, I don’t want the getter to return null. If there some lombok magic that I’…
Inheritance for builders in lombok
I was trying to use lombok for my project. I have a class A: and a class B: I am getting an error saying builder() in B cannot override builder() in A, as return type in BBuilder is not compatible with return type in ABuilder. Is there some way to do this using lombok? I do not want to write
Lombok: RequiredArgsConstructor is not working
It seems that @RequiredArgsConstructor not working in the code below. Why is it? I get the error: For some reason seems it does work for other domain class in which no constructor defined but instead used the @RequiredArgsConstructor annotation. Answer According to Documentation, Required arguments are final …
Lombok not compiling in maven
I am trying to compile my project that uses lombok through maven and i am getting the following issue: Where the first error type is for the fields in this class: and the second error is when a class tries to access getters from lombok classes My maven pom.xml has the following in it: Answer I don’t kno…
Lombok @Builder not initializing collections
I am using Lombok’s @Data and @Builder annotations like this: When I create a new Movie using the builder, without specifying any actors, I would expect Lombok to initialize my List to Collections.emptyList(). But this does not happen: In the documentation for the @Builder annotation, it is stated at li…