Annox Project
· Annox is an open source project which allows you to read arbitrary Java annotations from XML resources. JAXB users may be interested in Annox annotation reader for JAXB RI which allows you to define JAXB Java/XML mappings in XML resources (instead of annotations).
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window annox-project-1.0.2.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.