here-sdk-release
· The Android PayPal Here SDK enables Android apps to process in-person credit card transactions using Contactless/EMV chip card readers or mag stripe swipers
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 here-sdk-release-2.0.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.