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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.

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