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Example Application Overview

The SimpleMessageApp application has the following components:

SimpleMessageClient: An application client that sends several messages to a queue
SimpleMessageEJB: A message-driven bean that asynchronously receives and processes the messages that are sent to the queue

Figure 28-1 illustrates the structure of this application. The application client sends messages to the queue, which was created administratively using the Admin Console. The JMS provider (in this case, the Application Server) delivers the messages to the instances of the message-driven bean, which then processes the messages.

Figure 28-1 The SimpleMessageApp Application

The source code for this application is in the <INSTALL>/j2eetutorial14/examples/ejb/simplemessage/ directory.

All of the material in The J2EE(TM) 1.4 Tutorial is copyright-protected and may not be published in other works without express written permission from Sun Microsystems.