PayMaya SDK Android
· The PayMaya Android SDK allows your app to accept payments from your customers using any MasterCard and Visa card (credit, debit, or prepaid).
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 sdk-android-0.6.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.