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A Message-Driven Bean Example

Dale Green and Kim Haase

Since message-driven beans are based on the Java Message Service (JMS) technology, to understand the example in this chapter you should already be familiar with basic JMS concepts such as queues and messages. The best place to learn about these concepts is the Java Message Service Tutorial:

http://java.sun.com/products/jms/tutorial/index.html
 

This chapter describes the source code of a simple message-driven bean example. Before proceeding, you should read the basic conceptual information in the section What Is a Message-Driven Bean?.

In This Chapter

Example Application Overview

The J2EE Application Client

The Message-Driven Bean Class

The onMessage Method

The ejbCreate and ejbRemove Methods

Running the SimpleMessageEJB Example

Starting the J2EE Server

Creating the Queue

Deploying the Application

Running the Client

Deploytool Tips for Message-Driven Beans

Specifying the Bean's Type and Transaction Management

Setting the Message-Driven Bean's Characteristics

Deploytool Tips for JMS Clients

Setting the Resource References

Setting the Resource Environment References

Specifying the JNDI Names

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