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“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 Viissides, 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. Is just like having a team of experts sitting at your side.”

Grady Booch, Chief Saentist, 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 Meanahan, 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 APís 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 induding JavaServer Pages” (JSP”), Servlets, Enterprise JavaBeans” (EJB”), and Java” Message Service (JMS) Apts. The J2EE Pattem 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:

a J2EE Pattern Catalog with 21 patterns-fully revised and newty 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 Authors

DEEPAK ALUR ís 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, pattems, and Java and J2EE technologies.

JOHN CRUPI #s a Distinguished Engineer and the Chief Java Architect of the Sun Java Center. He has over 17 years of eperence

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 Objed-Oriented technologies and their application within Enterprise and Web Services-based projects. His publications indude industry periodicals and books on Java and J2EE technologies and patterns.