Java Communications API
· The Java Communications 3.0 API is a Java extension that facilitates developing platform-independent
communications applications for technologies such as Smart Cards, embedded systems, and point-of-sale
devices, financial services devices, fax, modems, display terminals, and robotic equipment.
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 comm-2.0.3.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.