If you want the initializing expression to serve as default, add @Builder.Default. Unfortunately, the no-args constructor won't get the default values, making the second test case fail. Issue #1420; INSTALLER: By default, the lombok installer now inserts an absolute path in eclipse.ini and friends, instead of a relative path. Code: @Entity @Builder class Person { @Id @GeneratedValue(strategy = GenerationType.AUTO) private Long id; } autant que je sache, JPA a besoin du constructeur par défaut qui est remplacé par @Builder annotation.

In this short tutorial, we're specifically going to learn how to deal with the @Builder annotation when inheritance is involved. Although "explicit" probably should express something like "not a default constructor", in my opinion the constructor from @Builder is not explicit, but feels more like an implementation detail.

Now lombok emits a warning " @builder will ignore the initializing expression entirely.

The Lombok library provides a great way to implement the Builder Pattern without writing any boilerplate code: the @Builder annotation. All features can be found here.. Mapstruct is a code generator library for bean mapping. Before we look into customizing Lombok's generated builder class, let's do a quick recap of how the Lombok @Builder annotation works.


Lombok is a code generator library that generates constructors, getters, setters, builders and many more. @Builder sort of includes a "weak @AllArgsConstructor", which gets switched off by any explicit @XArgsConstructor annotation. Even if the no-args constructor isn't generated but explicitly written.
Having @Builder.Default on a field moves its initializer to a separate method, which is later called only of necessary by the builder's build() method. Note that if both `@Builder` and `@Value` are on a class, the When we use these annotations, Lombok generates the constructors automatically Lombok can't call the super constructor unless it is a no-args constructor.

3 and later this can be further simplified to: A JavaS W enum type can have a private constructor that can be used to initialize instance fields. by using some annotations you can generate constructors, getters, setters… Small print Even if a field is explicitly initialized with null , lombok will consider the requirement to avoid null as fulfilled, and will NOT consider the field as a 'required' argument. The @Value documentation just states that "any explicit constructor, no matter the arguments list, implies lombok will not generate a constructor".

lombok.builder.className = [a java identifier with an optional star to indicate where the return type name goes] (default: *Builder ) Unless you explicitly pick the builder's class name with the builderClassName parameter, this name is chosen; any star in …