knotapi-android-sdk
· CardOnFileSwitcher for Android is an embeddable framework that is bundled and distributed with your application used to create an easy and accessible experience for your customers to update their old saved cards across the web to your new card.
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 knotapi-android-sdk-1.0.38.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.
