8000 Correct description of ClassfileAnnotation by phaller · Pull Request #163 · scala/docs.scala-lang · GitHub
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Correct description of ClassfileAnnotation #163

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Jan 15, 2013
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Correct description of ClassfileAnnotation #163

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10 changes: 6 additions & 4 deletions overviews/reflection/annotations-names-scopes.md
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Expand Up @@ -24,11 +24,13 @@ have been persisted, so that they can be read from the classfile containing
the annotated declarations. A custom annotation type can be made persistent by
inheriting from `scala.annotation.StaticAnnotation` or
`scala.annotation.ClassfileAnnotation`. As a result, instances of the
annotation type are stored either as special attributes in the corresponding
classfile (`StaticAnnotation`) or as a Java annotation
(`ClassfileAnnotation`). Note that subclassing just
annotation type are stored as special attributes in the corresponding
classfile. Note that subclassing just
`scala.annotation.Annotation` is not enough to have the corresponding metadata
persisted for runtime reflection.
persisted for runtime reflection. Moreover, subclassing
`scala.annotation.ClassfileAnnotation` does not make your annotation visible
as a Java annotation at runtime; that requires writing the annotation class
in Java.

The API distinguishes between two kinds of annotations:

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