Powerful SharedPreferences
· Android library with a powerful and easy SharedPreferences wrapper, with support for obfuscation, logs, multiple SharedPreferences files, type safety and callback on changes (optionally with Android LiveData).
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 sharedpreferences-1.0.21.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.