XBee Library for Android
· This library allows you to create Android applications that interact with Digi International's XBee radio frequency (RF) modules.
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 xbee-android-library-1.0.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.