I want to create custom annotations to suppress individual FindBugs warnings to make it easier to use them via code-completion. For example, this one ignores constructors that don't set all @Nonnull fields.

@TypeQualifierDefault(ElementType.CONSTRUCTOR)
@SuppressFBWarnings("NP_NONNULL_FIELD_NOT_INITIALIZED_IN_CONSTRUCTOR")
@Retention(RetentionPolicy.CLASS)
public @interface SuppressNonnullFieldNotInitializedWarning
{ }

However, I still see the warning when using the annotation.

public class User {
    @Nonnull
    private String name;

    @SuppressNonnullFieldNotInitializedWarning
    public User() {
        // "Nonnull field name is not initialized by new User()"
    }
}

I've tried different retention policies and element types, putting the annotation on the constructor and the class, and even @TypeQualifierNickname.

This same pattern works to apply @Nonnull to all fields in a class.

@Nonnull
@TypeQualifierDefault(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
public @interface FieldsAreNonnullByDefault
{ }

FindBugs correctly displays a warning for code that assigns null to name.

@FieldsAreNonnullByDefault
public class User {
    private String name;

    public UserModel() {
        name = null;
        // "Store of null value into field User.name annotated Nonnull"
    }
}

I believe the problem is that @SuppressFBWarnings is not marked with @TypeQualifier while @Nonnull is, and thus @TypeQualifierDefault and @TypeQualifierNickname don't apply to it. But there must be some other mechanism to apply one annotation using another.

java annotations findbugs
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