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Core J2EE Patterns: Best Practices and Design Strategies (2nd Edition) 2nd Edition

4.7 out of 5 stars 55 customer reviews
ISBN-13: 978-0131422469
ISBN-10: 9780131422469
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Editorial Reviews

From the Back Cover

"The Java landscape is littered with libraries, tools, and specifications. What's been lacking is the expertise to fuse them into solutions to real-world problems. These patterns are the intellectual mortar for J2EE software construction."
--John Vlissides, co-author of Design Patterns, the "Gang of Four" book

"The authors of Core J2EE Patterns have harvested a really useful set of patterns. They show how to apply these patterns and how to refactor your system to take advantage of them. It's just like having a team of experts sitting at your side."
--Grady Booch, Chief Scientist, Rational Software Corporation

"The authors do a great job describing useful patterns for application architectures. The section on refactoring is worth the price of the entire book!"
--Craig McClanahan, Struts Lead Architect and Specification Lead for JavaServer Faces

"Core J2EE Patterns is the gospel that should accompany every J2EE application server...Built upon the in-the-trenches expertise of its veteran architect authors, this volume unites the platform's many technologies and APIs in a way that application architects can use, and provides insightful answers to the whys, whens, and hows of the J2EE platform."
--Sean Neville, JRun Enterprise Architect, Macromedia

Developers often confuse learning the technology with learning to design with the technology. In this book, senior architects from the Sun Java Center share their cumulative design experience on Java 2 Platform, Enterprise Edition (J2EE) technology.

The primary focus of the book is on patterns, best practices, design strategies, and proven solutions using the key J2EE technologies including JavaServer Pages(TM) (JSP(TM)), Servlets, Enterprise JavaBeans(TM) (EJB(TM)), and Java(TM) Message Service (JMS) APIs. The J2EE Pattern Catalog with 21 patterns and numerous strategies is presented to document and promote best practices for these technologies.

Core J2EE Patterns, Second Edition offers the following:

  • J2EE Pattern Catalog with 21 patterns--fully revised and newly documented patterns providing proven solutions for enterprise applications
  • Design strategies for the presentation tier, business tier, and integration tier
  • Coverage of servlets, JSP, EJB, JMS, and Web Services
  • J2EE technology bad practices
  • Refactorings to improve existing designs using patterns
  • Fully illustrated with UML diagrams
  • Extensive sample code for patterns, strategies, and refactorings

About the Author

DEEPAK ALUR is an Enterprise Java Architect with the Sun Java Center with over 14 years of experience. He remains focused on architecture, design, and implementation of large-scale Enterprise applications using Object-Oriented technologies, patterns, and Java and J2EE technologies.

JOHN CRUPI is a Distinguished Engineer and the Chief Java Architect of the Sun Java Center. He has over 17 years of experience in distributed object computing and remains focused on creating reusable, scalable J2EE architectures and bringing patterns to the next level.

DAN MALKS is a Principal Engineer with the Sun Java Center. He has over 16 years of experience and focuses on Object-Oriented technologies and their application within Enterprise and Web Services-based projects. His publications include industry periodicals and books on Java and J2EE technologies and patterns.


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Product Details

  • Hardcover: 528 pages
  • Publisher: Prentice Hall; 2 edition (May 10, 2003)
  • Language: English
  • ISBN-10: 9780131422469
  • ISBN-13: 978-0131422469
  • ASIN: 0131422464
  • Product Dimensions: 7.7 x 1.7 x 9.5 inches
  • Shipping Weight: 2.7 pounds
  • Average Customer Review: 4.7 out of 5 stars  See all reviews (55 customer reviews)
  • Amazon Best Sellers Rank: #406,888 in Books (See Top 100 in Books)

Customer Reviews

Top Customer Reviews

Format: Hardcover
We software developers often get ourselves buried in learning new technologies, particularly in J2EE, there are so many things to learn, e.g., JSP, Servlet, JAAS, JSSE, JMS, JavaMail, EJB, JDBC, JDO, etc. just to name a few. With these overwhelming technologies, we often overlook the issue how to "design" "good" systems using these technologies. Knowing the technology itself is one thing, and knowing how to design with it well is another. Technologies are always advancing, it is really the design technique that is the essence or hard-core skill that a software developer should obtain.
Patterns, are such essences. They are best practices from experiences on how to design the systems/components at different levels. And Core J2EE Patterns are such collections in the J2EE context.
Even though the authors claim that these patterns are used under the J2EE context, I see most of them also application in a more general context. For example,
If a remote service is to be provided, it is good practice to use Session Facade (or Remote Facade), and it will provide service by delegating to the Application Service (or Service Layer) or Business Delegate.
To facilitate the client to access a remote service, Business Delegate can be applied to hide the remoteness, in which it will use Service Locator to look up the remote service. In this sense, Business Delegate also functions as a proxy of the remote service.
To decouple the Business Object from accessing the resources directly, Data Access Object is a good design to be applied.
To move the data between the tiers or processes, Data Transfer Object can be use.
If studying carefully, you will a lot of patterns and concepts can be applied to non-J2EE applications.
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Format: Hardcover
Core Patterns begins by introducing patterns in general, then presents common J2EE AntiPatterns and proceeds to discuss the refactored solutions to these bad practices along with pointers to the relevant area of the J2EE Pattern Catalog. This allows a straight-through reading for those unfamiliar with patterns or use as a reference guide for experienced pattern users. Two years ago when the first edition of this book came out, I purchased it and read it. Immediately I recognized areas where I could improve my J2EE designs as well as a new vocabulary for describing common solutions to recurring problems.
In all J2EE applications I have developed since then I have used the patterns and refactorings presented here to great benefit. In addition, the common vocabulary allows my project teams to discuss potential designs much more quickly and unambiguously, since we understand exactly what someone has in mind when they say something like "We should use Business Delegates in our Struts Actions to access our business services, and we should use Transfer Objects to pass data between the tiers, and use Data Access Objects to access our data stores."
The Second Edition brings updates to the original patterns plus several new patterns and the concept of micro-architectures. In addition to the updated and new patterns, this edition also discusses many patterns in the context of widely-used frameworks such as Struts and JSTL. For example, the book notes that the Struts ActionServlet is a Front Controller which hands the request to the Struts RequestProcessor, which implements the new ApplicationController pattern.
Understanding and applying the patterns and refactorings is certain to make your application designs more robust, clean, and maintainable.
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Format: Hardcover
There are two obvious changes between this second edition and the first edition of this book. First, some new patterns have been added mostly dealing with web services. Second, the book has been released as a hard cover book, presumably because the publisher expects this to last on your shelf as long as the original "Design Pattern" book. The new patterns dealing with web services are a welcome addition to the book although anyone who is interested in this subject will probably want more detail such as found in Paul Monday's book.
Part 1 is an introduction to design patterns and the J2EE platform followed by a catalog of design considerations, bad practices and refactorings. Developers working with poorly designed J2EE applications will find this section especially helpful.
Part 2 is the collection of the design patterns and strategies. Each pattern is described in the expected level of detail. The format will remind you of the GoF book. Since this has become the standard format for presenting design patterns this should not be a surprise. The patterns are well thought, explained clearly, and demonstrated with some good code samples. If you have the first edition you will be very impressed with the improvements made in this new edition. It appears that virtually every pattern has been reworked to make the pattern easier to understand and use.
This is the book that every J2EE architect and programmer should have on their desk. Using the strategies in this book will make your applications more robust, make you more productive, and make your code easier to understand and maintain. Anyone designing, architecting, or coding with J2EE will find this book to be extremely useful.
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