Preface
Acknowledgments
Section 1 What Are Design Patterns?
Chapter 1 Introduction
Defining Design Patterns
The Learning Process
Studying Design Patterns
Notes on Object-Oriented Approaches
The Java Foundation Classes
Java Design Patterns
Chapter 2 UML Diagrams
Inheritance
Interfaces
Composition
Annotation
JVISION UML Diagrams
Visual SlickEdit Project Files
Section 2 Creational Patterns
Chapter 3 The Factory Pattern
How a Factory Works
Sample Code
The Two Subclasses
Building the Simple Factory
Factory Patterns in Math Computation
Thought Questions
Programs on the CD-ROM
Chapter 4 The Factory Method
The Swimmer Class
The Event Classes
Straight Seeding
Our Seeding Program
Other Factories
When to Use a Factory Method
Thought Question
Programs on the CD-ROM
Chapter 5 The Abstract Factory Pattern
A GardenMaker Factory
How the User Interface Works
Adding More Classes
Consequences of the Abstract Factory Pattern
Thought Question
Programs on the CD-ROM
Chapter 6 The Singleton Pattern
Creating a Singleton Using a Static Method
Exceptions and Instances
Throwing an Exception
Creating an Instance of the Class
Providing a Global Point of Access to a Singleton Pattern
The javax.comm Package as a Singleton
Other Consequences of the Singleton Pattern
Thought Question
Programs on the CD-ROM
Chapter 7 The Builder Pattern
An Investment Tracker
Calling the Builders
The List Box Builder
The Check Box Builder
Consequences of the Builder Pattern
Thought Questions
Programs on the CD-ROM
Chapter 8 The Prototype Pattern
Cloning in Java
Using the Prototype
Using the Prototype Pattern
Prototype Managers
Cloning Using Serialization
Consequences of the Prototype Pattern
Thought Question
Programs on the CD-ROM
Summary of Creational Patterns
Section 3 Structural Patterns
Chapter 9 The Adapter Pattern
Moving Data between Lists
Using the JFC JList Class
Two-Way Adapters
Pluggable Adapters
Adapters in Java
Thought Question
Programs on the CD-ROM
Chapter 10 The Bridge Pattern
The Class Diagram
Extending the Bridge
Java Beans as Bridges
Consequences of the Bridge Pattern
Thought Question
Programs on the CD-ROM
Chapter 11 The Composite Pattern
An Implementation of a Composite
Computing Salaries
The Employee Classes
The Boss Class
Building the Employee Tree
Self-Promotion
Doubly Linked List
Consequences of the Composite Pattern
A Simple Composite
Composites in Java
Other Implementation Issues
Thought Questions
Programs on the CD-ROM
Chapter 12 The Decorator Pattern
Decorating a CoolButton
Using a Decorator
The Class Diagram
Decorating Borders in Java
Nonvisual Decorators
Decorators, Adapters, and Composites
Consequences of the Decorator Pattern
Thought Questions
Programs on the CD-ROM
Chapter 13 The Facade Pattern
Building the Facade Classes
Consequences of the Facade Pattern
Notes on Installing and Running the dbFrame Program
Thought Question
Programs on the CD-ROM
Chapter 14 The FI)weight Pattern
Discussion
Example Code
Flyweight Uses in Java
Sharable Objects
Copy-on-Write Objects
Thought Question
Programs on the CD-ROM
Chapter 15 The Proxy Pattern
Sample Code
Copy-on-Write
Enterprise Java Beans
Comparison with Related Patterns
Thought Question
Programs on the CD-ROM
Summary of Structural Patterns
Section 4 Behavioral Patterns
Chapter 16 Chain of Responsibility Pattern
Applicability
Sample Code
The List Boxes
Programming a Help System
A Chain or a Tree?
Kinds of Requests
Examples in Java
Consequences of the Chain of Responsibility
Thought Questions
Programs on the CD-ROM
Chapter 17 The Command Pattern
Motivation
Command Objects
Building Command Objects
The Command Pattern
The Command Pattern in the Java Language
Consequences of the Command Pattern
Providing Undo
Thought Questions
Programs on the CD-ROM
Chapter 18 The Interpreter Pattern
Motivation
Applicability
Simple Report Example
Interpreting the Language
Objects Used in Parsing
Reducing the Parsed Stack
Implementing the Interpreter Pattern
Consequences of the Interpreter Pattern
Thought Question
programs on the CD-ROM
Chapter 19 The Iterator Pattern
Motivation
Enumerations in Java
Sample Code
Filtered Iterators
Consequence of the Iterator Pattern
Composites and Iterators
Iterators in Java 1.2
Thought Question
Programs on the CD-ROM
Chapter 20 The Mediator Pattern
An Example System
Interactions between Controls
Sample Code
Mediators and Command Objects
Consequences of the Mediator Pattern
Single Interface Mediators
Implementation Issues
Programs on the CD-ROM
Chapter 21 The Memento Pattern
Motivation
Implementation
Sample Code
Consequences of the Memento Pattern
Thought Question
Programs on the CD-ROM
Chapter 22 The Observer Pattern
Watching Colors Change
The Message to the Media
The JList as an Observer
The MVC Architecture as an Observer
The Observer Interface and Observable Class
Consequences of the Observer Pattern
Thought Questions
Programs on the CD-ROM
Chapter 23 The State Pattern
Sample Code
Switching between States
How the Mediator Interacts with the StateManager
State Transitions
Mediators and the God Class
Consequences of the State Pattern
Thought Questions
Programs on the CD-ROM
Chapter 24 The Strategy Pattern
Motivation
Sample Code
The Context Class
The Program Commands
The Line and Bar Graph Strategies
Drawing Plots in Java
Consequences of the Strategy Pattern
Thought Question
Programs on the CD-ROM
Chapter 25 The Template Pattern
Motivation
Kinds of Methods in a Template Class
Template Method Patterns in Java
Sample Code
Templates and Callbacks
Consequences of the Template Pattern
Thought Question
Programs on the CD-ROM
Chapter 26 The Visitor Pattern
Motivation
When to Use the Visitor Pattern
Sample Code
Visiting the Classes
Visiting Several Classes
Bosses are Employees, Too
Catch-All Operations Using Visitors
Double Dispatching
Traversing a Series of Classes
Consequence of the Visitor Pattern
Thought Question
Programs on the CD-ROM
Section 5 Design Patterns and the Java Foundation Classes
Chapter 27 The JFC, or Swing
Installing and Using Swing
Ideas behind Swing
The Swing Class Hierarchy
Chapter 28 Writing a Simple JFC Program
Setting the Look and Feel
Setting the Window Close Box
Making a JxFrame Class
A Simple Two-Button Program
More on JButton
Programs on the CD-ROM
Chapter 29 Radio Buttons and Toolbars
Radio Buttons
The JToolBar
JToggleButton
A Sample Button Program
Programs on the CD-ROM
Chapter 30 Menus andActions
Action Objects
Design Patterns in the Action Object
Programs on the CD-ROM
Chapter 31 The JList Class
List Selections and Events
Changing a List Display Dynamically
A Sorted JList with a ListModel
Sorting More-Complicated Objects
Getting Database Keys
Adding Pictures in List Boxes
Programs on the CD-ROM
Chapter 32 The JTable Class
A Simple JTable Program
Cell Renderers
Rendering Other Kinds of Classes
Selecting Cells in a Table
Patterns Used in This Image Table
Programs on the CD-ROM
Chapter 33 The JTree Class
The TreeModel Interface
Programs on the CD-ROM
Summary
Section 6 Case Studies
Chapter 34 Sandy and the Mediator
Chapter 35 Herb's Text Processing Tangle
Chapter 36 Mary's Dilemma
Bibliography
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