#Java reflection get method annotation code#

If an annotation type T is (meta-)annotated with annotation whose value element indicates a type Similarly, attempting to read an enum-valued member will result inДЄ EnumConstantNotPresentException if the enum constant in theДЄnnotation is no longer present in the enum type. Will result in a TypeNotPresentException. (directly or indirectly) a Class-valued member referring toДЄ class that is not accessible in this VM, attempting to read the classД«y calling the relevant Class-returning method on the returned annotation If an annotation returned by a method in this interface contains

Methods, because their results will expose the additionalДЄnnotations of type T whereas previously they exposed only a Results of the getAnnotationsByType(Class) The addition of the annotations of type T changes the.Only see a container annotation on the element and not see an Of the getAnnotation(Class) methods and getAnnotations() methods, because those methods will now The addition of the annotations of type T changes the results.The addition of the annotations of type T is both.If an annotation of type T is present on anД®lement and T is made repeatable and more annotations of.The change to T changes the results of the getAnnotationsByType(Class) methods called with anДЄrgument of T, because those methods will now recognize anДЄnnotation of type TC as a container annotation for TДЄnd will 'look through' it to expose annotations of type T.Methods will not change due to TC becoming the containing To the getAnnotation(Class) (called with anДЄrgument of T or TC) and getAnnotations() methods because the results of the The change to T is behaviorally compatible with respect.T is modified to be repeatable with TC as its If an annotation type TC is present on an element, and.

Repeatable, TC can be introduced as a new type.) (An annotation type TC may informally serve as an actingД¬ontaining annotation type before T is modified to beДЇormally repeatable. If they linked against the earlier version. Type TC) will link against the modified version of T Type TC (or with other kinds of uses of type T or of For binaryД¬ompatibility, class files with annotations of type T or of

#Java reflection get method annotation code#

That is, for source compatibility, source code with annotations of Modifying T to be repeatable is source and binaryД¬ompatible with existing uses of T and with existing uses.The containing annotation type for T is TC. There are several compatibility concerns to keep in mind if anДЄnnotation type T is originally not repeatable and The value element of the container annotation. Of their container annotation, in the order in which they appear in Present on an element E is computed as if indirectly presentДЄnnotations on E are directly present on E in place Overview of kind of presence detected by different AnnotatedElement methodsДЇor an invocation of getAnnotationsByType( Class ), the order of annotations which are directly or indirectly The table below summarizes which kind of annotation presenceДifferent methods in this interface examine. Is inheritable, and A is associated with the superclass of Present on E, and E is a class, and A's type No annotation of A 's type is directly or indirectly.A is directly or indirectly present on E or.An annotation A is associated with an element E.Inheritable, and A is present on the superclass of E. No annotation of A 's type is directly present on.An annotation A is present on an element E if either:.Type is the containing annotation type of A 's type. RuntimeVisibleParameterAnnotations or RuntimeVisibleTypeAnnotationsДЄttribute, and A 's type is repeatable, and the attribute containsД®xactly one annotation whose value element contains A and whose An annotation A is indirectly present on anД®lement E if E has a RuntimeVisibleAnnotations or.An annotation A is directly present on anД®lement E if E has a RuntimeVisibleAnnotations or RuntimeVisibleParameterAnnotations or RuntimeVisibleTypeAnnotations attribute, and the attribute.Interface to describe precisely which annotations are returned by Present, and associated are used throughout this The terms directly present, indirectly present, ContainerДЄnnotations may be generated at compile-time to wrap multiple Present, and return any annotations inside the container. Method will 'look through' a container annotation (JLS 9.7), if If the argument toД®ither method is a repeatable annotation type (JLS 9.6), then the The getAnnotationsByType(Class) and getDeclaredAnnotationsByType(Class) methods support multipleДЄnnotations of the same type on an element. The arrays returned by methods of this interface may be modifiedД«y callers without affecting the arrays returned to other callers. AllДЄnnotations returned by methods in this interface are immutable and This interface allows annotations to be read reflectively. Represents an annotated element of the program currently running in this