Building a JMS Client

A typical JMS client can be built following these basic steps:

1. Create a connection to the messaging system provider
2. Create sessions, for sending and receiving messages
3. Create MessageProducers and MessageConsumers to create or receive messages

Once these steps have been performed, a message-producing client will create messages and publish them to topics, while a message-consuming client will listen for messages associated with a topic, and consume them as they arrive.

To illustrate in detail how this works, we examine a typical message producer, used to publish messages to a topic in a pub/sub messaging system. Note that all exception handing code has been omitted for clarity.