The MsgViewer is a Message Facility example itself, yet a useful tool to reveal and test Message resources under the hood. Its source code is a single java class tutor/msg/MsgViewer.java . But the implementation is rather sophisticated, for now, you can just ignore the details and use it as a tool.
The MsgViewer example can be used to view any message defined at any java class. But this needs the Messager name specified at the command line, so you need to run it locally instead of clicking webstart links.
