Amalia
· Amalia is a painless Android MVP implementation which facilitates separation of concerns and dictates a straightforward uni-directional flow of data between components.
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 amalia-0.3.1.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.