Jakarta Messaging 3.1
· This feature enables the configuration of resource adapters to access messaging systems by using the Jakarta Messaging API. This feature also enables the configuration of Jakarta Messaging connection factories, queues, topics, and activation specifications. Any Jakarta Messaging resource adapter that complies with the Jakarta Connectors 2.1 specification can be used.
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 messaging-3.1-23.0.0.8.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.