AndroidPinning Library
· An Android library that facilitates certificate pinning for SSL connections in Android apps, in order to minimize dependence on Certificate Authorities.
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 AndroidPinning-1.0.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.