May 2001
Intermediate to advanced
1088 pages
30h 13m
English
Content preview from Special Edition Using Java™ 2 Enterprise Edition
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More About Messages
So far, you've seen a lot about queues and topics, but not much about messages. Messages are the most important part of JMS, and there are many different types of messages and many interesting features common to all messages.
A JMS message has three parts, as shown in Figure 19.7.
Figure 19.7. A JMS message has a header, properties, and a body.
The message header is a set of values that is present on every message. The properties are similar to header values in that they are separate from the actual message content and can appear on any type of message. You can think of the properties as header values that you define yourself. ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.