Lombok will flag any usage of the relevant annotation ( or as a warning or error if configured. If set to true, then lombok will add a to generated constructors. Supported configuration keys: lombok.an圜onstructor.addConstructorProperties = (default: false)

If a conflict arises (one of your constructors ends up with the same signature as one that lombok generates), a compiler error will occur. This means you can write your own specialized constructor, and let lombok generate the boilerplate ones as well. Unlike most other lombok annotations, the existence of an explicit constructor does not stop these annotations from generating their own constructor. Static fields are skipped by these annotations. For more details see the documentation on the onX feature. To put annotations on the generated constructor, you can use but be careful this is an experimental feature. This means your API users get write MapEntry.of('foo', 5) instead of the much longer new MapEntry('foo', 5). This mode is enabled by supplying the staticName value for the annotation, like so: Such a static factory method will infer generics, unlike a normal constructor. Fields marked with result in null checks on those parameters.Įach of these annotations allows an alternate form, where the generated constructor is always private, and an additional static factory method that wraps around the private constructor is generated. The order of the parameters match the order in which the fields appear in your generates a constructor with 1 parameter for each field in your class. The constructor will throw a NullPointerException if any of the parameters intended for the fields marked with contain null. For those fields marked with an explicit null check is also generated. All non-initialized final fields get a parameter, as well as any fields that are marked as that aren't initialized where they are declared. This annotation is useful primarily in combination with either or one of the other constructor generating generates a constructor with 1 parameter for each field that requires special handling. Certain java constructs, such as hibernate and the Service Provider Interface require a no-args constructor. For fields with constraints, such as fields, no check is generated,so be aware that these constraints will generally not be fulfilled until those fields are properly initialized later. If this is not possible (because of final fields), a compiler error will result instead, unless = true) is used, then all final fields are initialized with 0 / false / null. This set of 3 annotations generate a constructor that will accept 1 parameter for certain fields, and simply assigns this parameter to the will generate a constructor with no parameters.

Java enum with values