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This second edition introduces new refactorings, new patterns for using XML and constructing J2EE Web services, and discussions of bad practices to avoid. Finally, the authors present an end-to-end multi-tier case study covering every stage of enterprise development. Includes new forewords written by industry leaders, as well as First Edition forewords by Grady Booch and Martin Fowler. Salient Features NEW - Suns best J2EE patterns—Fully updated and refactored for J2EE 1.4. NEW - New patterns for using XML and building J2EE Web services. NEW - New and updated coverage of bad practices to avoid - Helps students avoid making the most common mistakes in enterprise Java development. Definitive J2EE patterns coverage direct from Suns experts—Sun architects present best practices and patterns encompassing JSP, Servlets, EJB, and many other J2EE technologies. Complete enterprise case study—Presents an end-to-end case study demonstrating how the patterns in this book fit together. Table of Contents Patterns and J2EE. Presentation Tier Design Considerations and Bad Practices. Business Tier Design Considerations and Bad Practices. J2EE Refactorings. J2EE Pattern Catalog. J2EE Patterns Overview. Presentation Tier Patterns. Business Tier Patterns. Integration Tier Patterns.