April 2002
Beginner to intermediate
1128 pages
26h 33m
English
book
Sams Teach Yourself J2EE™ in 21 Days
by Martin Bond, Dan Haywood, Debbie Law, Andy Longshaw, Peter Roxburgh
Content preview from Sams Teach Yourself J2EE™ in 21 Days
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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.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.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.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.
Q&A
| Q1: | I have a monolithic program that I would like transition into an n-tier application. How do I do this? |
| A1: | First you need to identify what sort of target architecture is required. If your application is to be Web-enabled, you will need to provide Web-oriented functionality in the presentation layer. If you are working with persistent data, you will need data access through a data access layer. You should map out your target architecture based on the services available under the J2EE platform.
Next, you will need to sift through the monolithic code separating out the code belonging to the logical layers. This code might need to be rewritten in such a way as to make it maintainable and extensible. Introduce modularity by adopting object-oriented ... |
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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.