Volley
· A set of Custom Classes with UI components for network programming, integration and transaction handling in a better and standard way. This will help developers for making quality use of volley library.
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 volley-0.0.3.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.