Annogen is a framework which helps you work with JSR175 Annotations. In a nutshell, Annogen generates a proxy layer in front of your Annotations. This lets you:

Override JSR175 Annotation values

...with data from XML or arbitrary plugin code that you write.

Migrate JDK1.4 code to JSR175 translating javadoc tags into Annotations

Work with popular introspection APIs

...including Reflection, Javadoc-Doclet, QDox, and APT-Mirror.