4.3. A Simple Publish/Subscribe Example
This section describes the publishing and subscribing programs in a pub/sub example that uses a message listener to consume messages asynchronously. This section then explains how to compile and run the programs, using the J2EE SDK 1.3.
4.3.1. Writing the Pub/Sub Client Programs
The publishing program, SimpleTopicPublisher.java, performs the following steps:
1. |
Performs a JNDI API lookup of the TopicConnectionFactory and topic
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2. |
Creates a connection and a session
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3. |
Creates a TopicPublisher
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4. |
Creates a TextMessage
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5. |
Publishes one or more messages to the topic
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6. |
Closes the connection, which automatically closes the session and TopicPublisher
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The receiving program, SimpleTopicSubscriber.java
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