MQ Light Java API and Samples distribution project, for assembling the project deliverables into a single zip. It is also capable of uploading the javadoc documentation to github.
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 mqlight-distribution-1.0.2016062300.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.