Jakarta XML Web Services 4.0
· This feature enables support for Jakarta XML Web Services 4.0. These web services and clients communicate using XML. Annotations can be used to simplify the development of service clients and endpoints.
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 xmlWS-4.0-23.0.0.8.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.