Jeyzer Profile Updater
· The Jeyzer profile updater project is providing the profile update logic and the build plugins which apply it. Documentation available at https://jeyzer.org/docs/shared-profile/profile-updaters/
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 jeyzer-profile-updater-3.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.