Chapter 3. JMS Messages

All too often when people think about messaging, their minds immediately focus on the mechanics of the process and the entity for which the process is being implemented—the message—is all too easily forgotten. The message is the unit of exchange and without first defining the message, we have nothing with which to communicate. Thus, before we explore the use of the JMS API, we examine in detail the JMS message. We review the process of message definition and learn what factors influence the nature of the message content. We detail the structure of JMS messages, discuss key attributes, and consider when a given message type should be used. We also answer questions regarding how the JMS client uses the JMS message interface. ...

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