9.2. Writing and Compiling the Application Components

Writing and compiling the components of the application involve

  • Coding the application client

  • Coding the message-driven beans

  • Coding the entity bean

  • Compiling the source files

9.2.1. Coding the Application Client: HumanResourceClient.java

The application client program, HumanResourceClient.java, performs the following steps:

1.
Uses the Java Naming and Directory Interface (JNDI) API naming context java:comp/env to look up a TopicConnectionFactory, a QueueConnectionFactory, and a topic
2.
Creates a TemporaryQueue to receive notification of processing that occurs, based on new-hire events it has published
3.
Creates a QueueReceiver for the TemporaryQueue, sets the QueueReceiver's message listener, ...

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