Eclipse Paho
· The Paho project provides open-source implementations of open and standard messaging protocols aimed at new, existing, and emerging applications for Machine to Machine (M2M) and Internet of Things (IoT).
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 java-parent-1.2.5.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.
