Java™ Message Service API Tutorial and Reference: Messaging for the J2EE™ Platform

10.2. Writing and Compiling the Application Components

Writing and compiling the components of the applications involve

• Coding the application client
• Coding the message-driven bean
• Compiling the source files

10.2.1. Coding the Application Client: MultiAppServerRequester.java

The application client class, MultiAppServerRequester.java, does the following.

1.	It uses the Java Naming and Directory Interface (JNDI) API naming context java:comp/env to look up two connection factories and a topic.
2.	For each connection factory, it creates a connection, a publisher session, a publisher, a subscriber session, a subscriber, and a temporary topic for replies.
3.	Each subscriber sets its message listener, ReplyListener, and starts the connection. ...