May 2004
Beginner to intermediate
1032 pages
23h 48m
English
book
Sams Teach Yourself J2EE™ in 21 Days, Second Edition
by Martin Bond, Dan Haywood, Debbie Law, Andy Longshaw, Peter Roxburgh
Content preview from Sams Teach Yourself J2EE™ in 21 Days, Second Edition
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Reviewing External Resources and Legacy Systems
In an ideal world, your entire application might only contain Java components and applications, but it is not an ideal world. Very few architects have the opportunity to design entire Java systems from the ground-up, and very few enterprise developers have the opportunity to solely work on these types of systems. In reality, systems are heterogeneous in nature; that is, they are made up of many different parts. Figure 19.1 shows a complex heterogeneous environment that shows an array of clients attempting to access the services provided by a vast array of non-Java applications and systems.
Figure 19.1. A complex heterogeneous environment.
As you can see, the system consists ...
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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.