Make all fields in Java Immutable Nullable

Question

@Immutable
@Modifiable
public interface Record {

    String id();

    String fName();

    String lName();

    String mName();
}

All the fields in Record can be Nullable. One way for me to make these fields Nullable is to add @Nullable annotation on top of each field. Like this:

@Nullable
String mName()

Is there a way for me to specify at the interface level(through some annotation) that all fields can be null?

score 0 · Answer 1 · answered Jul 02 '23 at 09:17

I used the following config to disable null check in builder and with methods:

@Value.Style(
  validationMethod = Value.Style.ValidationMethod.NONE,
)

The following quote is the the ValidationMethod.NONE javadoc description:

Disables null and mandatory attribute checks. Any missing primitives will be initialized to their zero-based values: false, 0, '\0'. Object references will be nulls. Any optional, default and collection attributes will be initialized with their appropriate default values regardless of this validation setting.

Make all fields in Java Immutable Nullable

1 Answers1