Annotation Interface Nullable

@Documented @Retention(CLASS) @Target(TYPE_USE) public @interface Nullable
Qualifier for a reference type in a TYPE_USE position: The type that has this annotation explicitly includes the value null.

If annotation based null analysis is enabled using this annotation has two consequences:

  1. Binding a null value to an entity (field, local variable, method parameter or method return value) of this type is legal.
  2. Dereferencing an expression of this type is unsafe, i.e., a NullPointerException can occur at runtime.

Note: Since org.eclipse.jdt.annotation 2.0.0, the @Target is {TYPE_USE}. For the old API, see @Nullable in 1.1.0.