android.support.annotation
Annotation Type Nullable

@Retention(value=CLASS)
@Target(value={METHOD,PARAMETER,FIELD})
public @interface Nullable

Denotes that a parameter, field or method return value can be null.

When decorating a method call parameter, this denotes that the parameter can legitimately be null and the method will gracefully deal with it. Typically used on optional parameters.

When decorating a method, this denotes the method might legitimately return null.

This is a marker annotation and it has no specific attributes.