java.lang.reflect
Interface AnnotatedElement
- AccessibleObject, Class<T>, Constructor<T>, Field, Method, Package
Represents an element that can be annotated. The methods of this interface
provide reflection-based access to the annotations associated with a
particular element, such as a class, field, method or package. Each
annotation returned by these methods is both immutable and serializable.
The returned arrays may be freely modified, without any effect on the
arrays returned to future callers.
If an annotation refers to a type or enumeration constant that is
inaccessible, then a
TypeNotPresentException or
EnumConstantNotPresentException will be thrown. Likewise,
invalid annotations will produce either a
AnnotationTypeMismatchException or
IncompleteAnnotationException.
extends Annotation> T getAnnotation
public extends Annotation> T getAnnotation(Class annotationClass)
Returns the element's annotation for the specified annotation type,
or null if no such annotation exists.
annotationClass - the type of annotation to look for.
- this element's annotation for the specified type, or
null if no such annotation exists.
getAnnotations
public Annotation[] getAnnotations()
Returns all annotations associated with the element. If there are
no annotations associated with the element, then a zero-length array
will be returned. The returned array may be modified by the client
code, but this will have no effect on the annotation content of the
element, and hence no effect on the return value of this method for
future callers.
- this element's annotations.
getDeclaredAnnotations
public Annotation[] getDeclaredAnnotations()
Returns all annotations directly defined by the element. If there are
no annotations directly associated with the element, then a zero-length
array will be returned. The returned array may be modified by the client
code, but this will have no effect on the annotation content of this
class, and hence no effect on the return value of this method for
future callers.
- the annotations directly defined by the element.
isAnnotationPresent
public boolean isAnnotationPresent(Annotation> annotationClass)
Returns true if an annotation for the specified type is associated
with the element. This is primarily a short-hand for using marker
annotations.
annotationClass - the type of annotation to look for.
- true if an annotation exists for the specified type.
AnnotatedElement.java
Copyright (C) 2004, 2005 Free Software Foundation, Inc.
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