December 2001
Intermediate to advanced
304 pages
7h 36m
English
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B.1. Designing with J2EE
Each of the three main components of J2EE discussed previously is run in the confines of a container. For JSP and Servlets, this container may be a Web server. For EJB, it's an EJB container (possibly also a Web server). The container is responsible for instantiating and invoking the operations on the classes of each of the J2EE components. For instance, the javax.servlet.Servlet interface defines various methods that the Servlet container will invoke, but the container actually invokes our realization of this interface, albeit indirectly. This is a prime example of J2EE compliance with the Open-Closed Principle.
If we were to attempt to develop a Servlet that didn't adhere to the Servlet API, we couldn't use it within ...
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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.