How do I set the default value in Lombok?

How do I set the default value in Lombok?

If you set any default values to the fields, they never considered during build the object.

1. @ToString. @Builder(builderClassName = “Builder”) public class LombokBuilderDefaultValueDemo1 {
2. import lombok.Builder; import lombok.Builder.Default;
3. @ToString. @Builder(toBuilder = true, builderClassName = “Builder”)

What is Lombok value?

Lombok Value annotation (@Value) is used when creating Immutable classes. All Lombok generated fields are made private and final by default, and setters are not generated. The class itself is also made final by default.

Can Lombok Builder return null?

NonNull annotation and Lombok will generate null checks for you in the constructor and setters, so that Builder. build() will fail, if those fields are not set. Using builder pattern allows you to have very clear identification of which fields you’re setting to which values.

What is AllArgsConstructor?

@AllArgsConstructor generates a constructor with 1 parameter for each field in your class. Each 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.

How to get the default value in Lombok?

In version 1.18.2 both @NoArgsConstructor and @Builder work, but not completely. Constructor with one or more fields will null all other default initialisations: new UserInfo (“Some nick”) will cause isEmailConfirmed to be false again. This way all default fields will be initialised and we’ll get expected constructor.

When to use Lombok @ value annotation in Java?

Lombok Value annotation (@ Value) is used when creating Immutable classes. All Lombok generated fields are made private and final by default, and setters are not generated. The class itself is also made final by default. Make sure you already installed Lombok setup for your IDE.

How to use access attribute in Lombok constructor?

Let’s see how we can use access attribute to customize the access modifier – which is generally public – of a default generated constructor: Basically, Lombok provides AccessLevel enum to allow us to specify the desired access level. As shown above, the no-args constructor is generated with the protected modifier.

How to change package private access in Lombok?

Any field that does not already have an access modifier (i.e. any field that looks like package private access) is changed to have the appropriate access modifier. Any package private field which must remain package private can be annotated with @PackagePrivate (also in the lombok.experimental package).