Module java.base

Package java.lang.reflect

Interface AnnotatedType

All Superinterfaces:

AnnotatedElement

All Known Subinterfaces:

AnnotatedArrayType, AnnotatedParameterizedType, AnnotatedTypeVariable, AnnotatedWildcardType

public interface AnnotatedType
extends AnnotatedElement

AnnotatedType represents the potentially annotated use of a type in the program currently running in this VM. The use may be of any type in the Java programming language, including an array type, a parameterized type, a type variable, or a wildcard type. Note that any annotations returned by methods on this interface are type annotations (JLS 9.7.4) as the entity being potentially annotated is a type.

See Java Language Specification:

4.1 The Kinds of Types and Values
4.2 Primitive Types and Values
4.3 Reference Types and Values
4.4 Type Variables
4.5 Parameterized Types
4.8 Raw Types
4.9 Intersection Types
10.1 Array Types

Since:

1.8

Method Summary

Modifier and Type	Method	Description
default AnnotatedType	getAnnotatedOwnerType()	Returns the potentially annotated type that this type is a member of, if this type represents a nested type.
<T extends Annotation> T	getAnnotation(Class<T> annotationClass)	Returns this element's annotation for the specified type if such an annotation is present, else null.
Annotation[]	getAnnotations()	Returns annotations that are present on this element.
Annotation[]	getDeclaredAnnotations()	Returns annotations that are directly present on this element.
Type	getType()	Returns the underlying type that this annotated type represents.

Methods declared in interface java.lang.reflect.AnnotatedElement

getAnnotationsByType, getDeclaredAnnotation, getDeclaredAnnotationsByType, isAnnotationPresent

Method Details

getAnnotatedOwnerType

default AnnotatedType getAnnotatedOwnerType()

Returns the potentially annotated type that this type is a member of, if this type represents a nested type. For example, if this type is @TA O<T>.I<S>, return a representation of @TA O<T>.

Returns null if this AnnotatedType represents a top-level class or interface, or a local or anonymous class, or a primitive type, or void.

Returns null if this AnnotatedType is an instance of AnnotatedArrayType, AnnotatedTypeVariable, or AnnotatedWildcardType.

Implementation Requirements:

This default implementation returns null and performs no other action.

Returns:

an AnnotatedType object representing the potentially annotated type that this type is a member of, or null

Throws:

TypeNotPresentException - if the owner type refers to a non-existent class or interface declaration

MalformedParameterizedTypeException - if the owner type refers to a parameterized type that cannot be instantiated for any reason

Since:

9

getType

Type getType()

Returns the underlying type that this annotated type represents.

Returns:

the type this annotated type represents

getAnnotation

<T extends Annotation> T getAnnotation(Class<T> annotationClass)

Returns this element's annotation for the specified type if such an annotation is present, else null.

Note that any annotation returned by this method is a type annotation.

Specified by:

getAnnotation in interface AnnotatedElement

Type Parameters:

T - the type of the annotation to query for and return if present

Parameters:

annotationClass - the Class object corresponding to the annotation type

Returns:

this element's annotation for the specified annotation type if present on this element, else null

Throws:

NullPointerException - if the given annotation class is null

getAnnotations

Annotation[] getAnnotations()

Returns annotations that are present on this element. If there are no annotations present on this element, the return value is an array of length 0. The caller of this method is free to modify the returned array; it will have no effect on the arrays returned to other callers.

Note that any annotations returned by this method are type annotations.

Specified by:

getAnnotations in interface AnnotatedElement

Returns:

annotations present on this element

getDeclaredAnnotations

Annotation[] getDeclaredAnnotations()

Returns annotations that are directly present on this element. This method ignores inherited annotations. If there are no annotations directly present on this element, the return value is an array of length 0. The caller of this method is free to modify the returned array; it will have no effect on the arrays returned to other callers.

Note that any annotations returned by this method are type annotations.

Specified by:

getDeclaredAnnotations in interface AnnotatedElement

Returns:

annotations directly present on this element