Design Patterns Workbook, 2002.pdf

Design Patterns Java™ Workbook

Steven John Metsker

Publisher: Addison Wesley

March 25, 2002

ISBN: 0-201-74397-3, 496 pages

Java programmers, you now have the resource you need to harness the considerable power of

design patterns. This unique book presents examples, exercises, and challenges that will help

you apply design pattern theory to real-world problems. Steve Metsker's learn-by-doing

approach helps you enhance your practical skills and build the confidence you need to use

design patterns effectively in mission-critical applications.

Design Patterns Java(TM) Workbook features the twenty-three foundational design patterns

introduced in the classic book Design Patterns (Addison-Wesley, 1995). In this new, hands-on

workbook, the patterns are organized into five major categories: interfaces, responsibility,

construction, operations, and extensions. Each category begins with a chapter that reviews and

challenges your ability to apply facilities built into Java. These introductory sections are

followed by chapters that explain a particular pattern in detail, demonstrate the pattern in use

with UML diagrams and Java code, and provide programming problems for you to solve.

With this book you will build expertise in important areas such as:

Adapting domain data to Swing components

Creating a FACADE for Swing

Handling recursion in composites

Understanding the role of BRIDGE in Java database connectivity

Making the connection between Model/View/Controller and OBSERVER

Maintaining relational integrity with a mediator

Using proxies to communicate between computers

Letting a service provider decide which class to instantiate

Supporting undo operations with MEMENTO

Prototyping with clones

Using COMMAND to supply a service

Developing thread-safe iterators

Extending classes with DECORATOR and VISITOR

Solutions to the design pattern challenges appear in the back of the book, so you can compare

your own work to expert approaches. A brief guide to UML explains the modeling notation,

and an accompanying Web site provides all the code examples from the book.

Through the instruction and exercises offered in Design Patterns Java(TM) Workbook , you

can fully understand the role of design patterns in Java application development, and enhance

your ability to put design patterns to work.

Many of the designations used by manufacturers and sellers to distinguish their products are

claimed as trademarks. Where those designations appear in this book, and Addison-Wesley

was aware of a trademark claim, the designations have been printed with initial capital letters

or in all capitals.

The author and publisher have taken care in the preparation of this book, but make no

expressed or implied warranty of any kind and assume no responsibility for errors or

omissions. No liability is assumed for incidental or consequential damages in connection with

or arising out of the use of the information or programs contained herein.

The publisher offers discounts on this book when ordered in quantity for special sales. For

more information, please contact:

Pearson Education Corporate Sales Division

201 W. 103 rd Street

Indianapolis, IN 46290

(800) 428-5331

corpsales@pearsoned.com

Visit Addison-Wesley on the Web: www.aw.com/cseng/

Library of Congress Cataloging-in-Publication Data

Metsker, Steven John.

Design patterns Java workbook / Steven John Metsker.

p. cm.—(The Software patterns series)

Includes bibliographical references and index.

ISBN 0-201-74397-3

1. Java (Computer program language) I. Title. II. Series

QA76.73.J38 M483 2002

005.13'3—dc21

2002018313

system, or transmitted, in any form, or by any means, electronic, mechanical, photocopying,

recording, or otherwise, without the prior consent of the publisher. Printed in the United

States of America. Published simultaneously in Canada.

For information on obtaining permission for use of material from this work, please submit a

written request to:

Pearson Education, Inc.

Rights and Contracts Department

75 Arlington Street, Suite 300

Boston, MA 02116

Fax: (617) 848-7047

Text printed on recycled paper

1 2 3 4 5 6 7 8 9 10—CRS—0605040302

First printing, March 2002

Dedication

To Alison

Who fills our house with glimmering light

With her loving, cozy fire

And Emma-Kate and Sarah-Jane

Our precious elves, beloved sprites

Who hop as light as bird from brier.

Through the house give glimmering light

By the dead and drowsy fire;

Every elf and fairy sprite

Hop as light as bird from brier;

—William Shakespeare

A Midsummer-Night's Dream

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