MicroProfile JSON Web Token 2.1
· This feature enables web applications or microservices to use the Eclipse MicroProfile JSON Web Token 2.1 specification to authenticate users instead of, or in addition to, the configured user registry.
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 mpJwt-2.1-23.0.0.8.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.