@Documented
 @Retention(value=RUNTIME)
 @Target(value={FIELD,LOCAL_VARIABLE,PARAMETER,METHOD})
public @interface NotNull
This annotation type is used to indicate that the associated field, local
 variable, method or constructor parameter, or method return value is not
 allowed to be null.  This annotation type is not strictly enforced by
 the compiler, but development environments may be configured to warn or
 reject attempts to use null values where non-null values are
 expected.
 
 This annotation type will appear in the generated Javadoc documentation for
 classes and interfaces that include it.
- See Also:
- Nullable