Description:

Coverage Includes

• Using Adapter to provide consistent interfaces to clients

• Using Facade to simplify the use of reusable toolkits

• Understanding the role of Bridge in Java database connectivity

• The Observer pattern, Model-View-Controller, and GUI behavior

• Java Remote Method Invocation (RMI) and the Proxy pattern

• Streamlining designs using the Chain of Responsibility pattern

• Using patterns to go beyond Java's built-in constructor features

• Implementing Undo capabilities with Memento

• Using the State pattern to manage state more cleanly and simply

• Optimizing existing codebases with extension patterns

• Providing thread-safe iteration with the Iterator pattern

• Using Visitor to define new operations without changing hierarchy classes

Design Patterns in Java™ gives you the hands-on practice and deep insight you need to fully leverage the significant power of design patterns in any Java software project. The perfect complement to the classic Design Patterns, this learn-by-doing workbook applies the latest Java features and best practices to all of the original 23 patterns identified in that groundbreaking text.

Drawing on their extensive experience as Java instructors and programmers, Steve Metsker and Bill Wake illuminate each pattern with real Java programs, clear UML diagrams, and compelling exercises. You'll move quickly from theory to application—learning how to improve new code and refactor existing code for simplicity, manageability, and performance.

If you're a Java programmer wanting to save time while writing better code, this book's techniques, tips, and clear explanations and examples will help you harness the power of patterns to improve every program you write, design, or maintain.

All source code is available for download at http://www.oozinoz.com.

 

Table of Contents:

Preface xiii Chapter 1 Introduction 1

Why Patterns? 1

Why Design Patterns? 2

Why Java? 3

UML 4

Challenges 4

The Organization of This Book 5

Welcome to Oozinoz! 6

Summary 7

Part I Interface Patterns 9Chapter 2 Introducing Interfaces 11

Interfaces and Abstract Classes 11

Interfaces and Obligations 13

Summary 15

Beyond Ordinary Interfaces 16

Chapter 3 Adapter 17

Adapting to an Interface 17

Class and Object Adapters 21

Adapting Data for a JTable 25

Identifying Adapters 30

Summary 31

Chapter 4 Facade 33

Facades, Utilities, and Demos 33

Refactoring to Facade 35

Summary 46

Chapter 5 Composite 47

An Ordinary Composite 47

Recursive Behavior in Composites 48

Composites, Trees, and Cycles 50

Composites with Cycles 56

Consequences of Cycles 60

Summary 60

Chapter 6 Bridge 63

An Ordinary Abstraction: On the Way to Bridge 63

From Abstraction to Bridge 66

Drivers as Bridges 68

Database Drivers 69

Summary 71

Part II Responsib