Jakarta Faces 4.0
· This feature enables support for web applications that use the Jakarta Faces 4.0 framework. This framework simplifies the construction of user interfaces.
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 faces-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.