IETF XP-Module
· The IETF module is an add-on to the XP framework that adds support of different standards defined by IETF. Currently only UUID and PunyCode is implemented.
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 ietf-5.8.10.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.