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CodeNotes for J2EE: EJB, JDBC, JSP and Servlets

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Overview

CodeNotes provides the most succinct, accurate, and speedy way for a developer to ramp up on a new technology or language. Unlike other programming books, CodeNotes drills down to the core aspects of a technology, focusing on the key elements needed in order to understand it quickly and implement it immediately. It is a unique resource for developers, filling the gap between comprehensive manuals and pocket reference. CodeNotes for J2EE: EJB, JDBC, JSP, and Servlets introduces Java developers to the key database and web development technologies of the Java 2 Platform, Enterprise Edition. The JDBC API, JavaServer Pages, and Servlet frameworks are covered individually with examples that show how these technologies work together to create robust, dynamic web-based applications. The book also explains how to use Enterprise JavaBeans to create large, distributed, scalable applications. This edition of CodeNotes includes: -A global overview of a technology and explanation of what problems it can be used to solve -Real-world examples -"How and Why," "Design Notes," and "Bugs and Caveats" sections that provide hints, tricks, workarounds, and tips on what should be taken advantage of or avoided -Instructions and classroom-style tutorials throughout from expert trainers and software developers Visit www.codenotes.com

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Author Information

Bio of Gregory Brill

Gregory Brill is the series editor of CodeNotes and the founder and president of Infusion Development Corporation, a technology training and consulting firm that specializes in architecting securities trading and analytic systems for several of the world's largest investment banks. He has written for C++ Users Journal, and is the author of Applying COM+. He lives in New York.

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Additional Info

Imprint

Random House Trade Paperbacks

Filesize

2.16 MB

Number of Pages

240

eBook ISBN

9780679647270

Excerpt from: CodeNotes for J2EE by Gregory Brill

Chapter 1: Introduction
Orientation, History, Background

What Is the Java 2 Enterprise Edition (J2EE)?

Depending upon whom you ask, Java 2 Enterprise Edition (J2EE) is one of many things. A systems architect might tell you that J2EE is a platform and design philosophy for large enterprise systems. Your local server administrator might tell you that J2EE is a combination of vendor products, WAR, JAR, and EAR files. A developer might tell you that J2EE is marketing spin wrapping up a suite of toolkits. In fact, J2EE comprises three major components.

1. A conceptual definition for enterprise systems architecture. This definition provides a rigorous design philosophy for building large, scalable, web-enabled systems.

2. A collection of API extensions that relate to enterprise systems. These APIs range from e-mail access to database connectivity, bridging concepts as different as distributed computing and web-based applications.

3. A new deployment specification for packaging Java components into a single enterprise solution. Basic Java uses a simple "Java Archive" standard for packaging a set of common class objects into a single deployable file. J2EE extends this concept to Web Archive (WAR) and Enterprise Archive (EAR) formats for deploying larger enterprise systems. This deployment specification includes support for role-based security.

History

In 1999, Sun announced a fundamental redefinition of the Java platform. Java had originally been designed as an all-encompassing "Write Once, Run Anywhere"-- system; but Java applications rapidly exploded across a tremendous range of platforms, from smart cards to air conditioners (e.g., www.myappliance.com) to distributed, mission-critical enterprise systems. Obviously, the requirements for an offline payment system on a smart card are vastly different from those of an enterprisewide, web-enabled stock trading platform.