John Hunt

In every software development project there is a need to ensure that the requirements of the user are met without compromising the ultimate goal of the project - these needs frequently change, and are often erratic. Agile software is a means of putting the software first while at the same time reacting to these user requirements in a flexible and agile way. This book covers the emerging methods and approaches (including extreme programming, feature-driven development and adaptive software development), that are loosely described as "Agile" and shows how to apply them effectively to software development projects. It shows how to plan, organise and develop systems using agile techniques, and highlights some of the problems that may be encountered. This down-to-earth approach looking at how the different methods can work together, will be welcomed by software developers, architects and engineers, business analysts, development managers and software professionals needingan accessible source of Agile techniques and applications.

Religion is an essential part of our humanity. We all follow some form of religion, in the original meaning of the word. But organised religion establishes definitions, boundaries and hierarchies which the founders would be amazed by. This is perhaps more true of Christianity than most other religions, due to the short life of Jesus, his sudden death, the lack of any contemporary records. His teaching about the kingdom of God is great; it could see us through our time on earth. But his followers watered it down and soon lost it altogether. It became a kingdom in heaven for the few, rather than one here and now for everyone. The Church, or Churches, that resulted became increasingly irrelevant, even a hindrance, to seeing it realised. Many will always find security and truth in the traditions that developed, and good for them. But for those who can't, for those who have given up on religion or never thought it worth considering, the original teachings are worth another look. If we could recover them and live by them, we could change ourselves and the world for the better. We could bring God back to earth.

1.1 Introduction This book introduces and guides the you through the use of the Unified Modeling Language (UML) and the Unified Process (both originally devised by Grady Booch,James Rumbaugh and Ivar Jacobson) and their application to Java systems.This means that the book will present you, thereader,withthenotationusedintheUMLandthestepsdescribedbytheUnifiedProcesswith particular reference to the Java environment (including the classes and the syntax). The book itself is structured in three parts. Part 1 introduces object-oriented analysis and design and the Unified Process. The UML is introduced, as necessary, to support the Unified Process steps.Part 2 discusses the topic of design patterns,while Part 3 looks at the UnifiedProcessandUMLintherealworld. The first part of the book is structured in the following manner: Chapter 2: Object -Oriented Analysis and Design This chapter surveys the most significant object-oriented design and analysis methods to emerge since the late 1980s. Chapter 3: An Introduction to the UML and the Unified Process This chapter provides the background to the UML and the Unified Process. It also presents a summary of both. Chapter 4: Software Architecture and Object-Oriented Design This chapter explains and justifies why an architecture is essential to the successful design and implementation of a large object-oriented system. Chapter 5: Requirements Discipline: Use Case Analysis Thischapterintroducestherequirementsdiscipline(whichmayalsobeknownasUseCaseAna- sis).Thisdisciplineattemptstoidentifywhatthefunctionalityofthesystemwillbe.Theseusecases will be essential as the backbone to the whole design process.

In this book, John Hunt and Chris Loftus take you through the core technologies that make up the Enterprise Edition of the Java 2 platform (J2EE). They cover all the aspects of J2EE that both professionals and students need to know to build multi-tier enterprise applications in Java - the technologies, the design methodology and design patterns. Whether you are a professional or student, this book will help equip you with the skills you need to build enterprise wide applications in Java. Key Topics Includes design issues using J2EE patterns Covers all parts of the enterprise application J2EE Uses an integrated example that spans the chapters to be built up by the reader More accessible and less daunting than a lot of the competition A coherent whole, rather than independent separate chapters (as with some rivals) Features and Benefits Provides an overview of J2EE technologies and their benefits. Discusses architectural design issues using J2EE patterns. Looks at the issues of designing and building multi-tier J2EE applications. Includes fully worked examples, built up throughout the book, which enable you to quickly develop your own multi-tier applications. About the Authors: Dr. John Hunt is Technical Director at JayDeeTechnology Ltd. He runs industrial courses, including server-side Java technologies. He also leads development projects for government and blue chip organisations using Java, J2EE, XML and C#. Chris Loftus is a Teaching Fellow at the Department of Computer Science at the University of Wales, Aberystwyth. He has taught Java-based courses, including J2EE, both in university and industry.