RIBs (Screen Stack Base)
· RIBs is the cross-platform architecture behind many mobile apps at Uber. This framework is designed for mobile apps with a large number of engineers and nested states.
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 rib-screen-stack-base-0.15.2.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.