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Description - J2EE Design Pattern by William C.R. Crawford

Architects of buildings and architects of software have more in common than most people think. Both professions require attention to detail, and both practitioners will see their work collapse around them if they make too many mistakes. It's impossible to imagine a world in which buildings get built without blueprints, but it's still common for software applications to be designed and built without blue prints, or in this case, design patterns. A software design pattern can be identified as "a recurring solution to a recurring problem." Using design patterns for software development makes sense in the same way that architectural design patterns make sense - if it works well in one place, why not use it in another? But developers have had enough of books that simply catalog design patterns without extending into new areas, and books that are so theoretical that you can't actually do anything better after reading them than you could before you started. This book approaches the subject in a practical and pragmatic way. The authors broaden the scope by discussing ways to choose design patterns when building an enterprise application from scratch, looking closely at the real world tradeoffs that Java developers must weigh when architecting their applications. Then they go on to show how to apply the patterns when writing realworld software. They also extend design patterns, presenting original patterns for data modelling, transaction/process modeling, and interoperability. The book offers extensive coverage of the five problem areas enterprise developers face: maintenance (extensibility); performance (system scalability; data modelling (business object modeling); transactions (process modelling);and messaging (interoperability) And with its careful balance between theory and practice, "J2EE Design Patterns" should give developers new to the Java enterprise development arena a solid understanding of how to approach a wide variety of architectural and procedural problems, and should give experienced J2EE pros an opportunity to extend and improve on their existing experience.

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