Jakarta RESTful Web Services 3.1
· This feature enables support for Jakarta RESTful Web Services 3.1. These annotations can be used to define web service clients and endpoints that comply with the REST architectural style. Endpoints are accessed through a common interface that is based on the HTTP standard methods.
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 restfulWS-3.1-23.0.0.8.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.