Table Of Content

5165CH00_FM.qxd 11/16/05 11:58 AM Page i SCJD Exam with J2SE 5 Second Edition Andrew Monkhouse and Terry Camerlengo 5165CH00_FM.qxd 11/16/05 11:58 AM Page ii SCJD Exam with J2SE 5,Second Edition Copyright © 2006 by Andrew Monkhouse and Terry Camerlengo All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval system, without the prior written permission of the copyright owner and the publisher. ISBN (pbk): 1-59059-516-5 Printed and bound in the United States of America 9 8 7 6 5 4 3 2 1 Trademarked names may appear in this book. Rather than use a trademark symbol with every occurrence of a trademarked name, we use the names only in an editorial fashion and to the benefit of the trademark owner, with no intention of infringement of the trademark. Lead Editor: Jason Gilmore Technical Reviewer: Jim Yingst Editorial Board: Steve Anglin, Dan Appleman, Ewan Buckingham, Gary Cornell, Tony Davis, JasonGilmore, Jonathan Hassell, Chris Mills, Dominic Shakeshaft, Jim Sumser Project Manager: Beth Christmas Copy Edit Manager: Nicole LeClerc Copy Editor: Liz Welch Assistant Production Director: Kari Brooks-Copony Production Editor: Lori Bring Compositor: Dina Quan Proofreader: Elizabeth Berry Indexer: John Collin Artist: Kinetic Publishing Services, LLC Cover Designer: Kurt Krames Manufacturing Director: Tom Debolski Distributed to the book trade worldwide by Springer-Verlag New York, Inc., 233 Spring Street, 6th Floor, New York, NY 10013. Phone 1-800-SPRINGER, fax 201-348-4505, e-mail [email protected], or visit http://www.springeronline.com. For information on translations, please contact Apress directly at 2560 Ninth Street, Suite 219, Berkeley, CA 94710. Phone 510-549-5930, fax 510-549-5939, e-mail [email protected], or visit http://www.apress.com. The information in this book is distributed on an “as is” basis, without warranty. Although every precaution has been taken in the preparation of this work, neither the author(s) nor Apress shall have any liability to any person or entity with respect to any loss or damage caused or alleged to be caused directly or indi- rectly by the information contained in this work. The source code for this book is available to readers at http://www.apress.comin the Source Code section. You will need to answer questions pertaining to this book in order to successfully download the code. 5165CH00_FM.qxd 11/16/05 11:58 AM Page iii Contents at a Glance About the Authors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi About the Technical Reviewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii PART 1 ■ ■ ■ Introduction and General Development Considerations ■ CHAPTER 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 ■ CHAPTER 2 Project Analysis and Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 ■ CHAPTER 3 Project Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 PART 2 ■ ■ ■ Implementing a J2SE Project ■ CHAPTER 4 Threading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 ■ CHAPTER 5 The DvdDatabase Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 ■ CHAPTER 6 Networking with RMI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163 ■ CHAPTER 7 Networking with Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199 ■ CHAPTER 8 The Graphical User Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . 225 PART 3 ■ ■ ■ Wrap-Up ■ CHAPTER 9 Project Wrap-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295 ■ INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325 iii 5165CH00_FM.qxd 11/16/05 11:58 AM Page iv 5165CH00_FM.qxd 11/16/05 11:58 AM Page v Contents About the Authors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi About the Technical Reviewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii PART 1 ■ ■ ■ Introduction and General Development Considerations ■ CHAPTER 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 J2SE 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 The SCJD Exam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 The Certification Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Downloading the Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Documentation and Questions . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Who Should Read This Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 About This Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Setting Up the J2SE 5 JDK and Environmental Variables . . . . . . . . . . . . 8 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 FAQs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 ■ CHAPTER 2 Project Analysis and Design . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Implementing a Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Gathering Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Using Accepted Design Patterns . . . . . . . . . . . . . . . . . . . . . . . . . 14 Documenting Design Decisions . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Organizing a Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 High-Level Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Design Decisions Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 v 5165CH00_FM.qxd 11/16/05 11:58 AM Page vi vi ■ CONTENTS Java Coding Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Naming Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 File Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Source Code Formatting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Formatting of Comments Within the Code . . . . . . . . . . . . . . . . . . 28 Suggested Coding Conventions for New Features in JDK 5 . . . . . 29 Javadoc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Coding Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Working with Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Best Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Writing Documentation As You Go . . . . . . . . . . . . . . . . . . . . . . . . 47 Assertions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 FAQs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 ■ CHAPTER 3 Project Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 What Are the Essential Requirements for the Sun Certification Project? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Introducing the Sample Project . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Application Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 FAQs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 PART 2 ■ ■ ■ Implementing a J2SE Project ■ CHAPTER 4 Threading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Threading Fundamentals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 A Brief Review of Threads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Multithreading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Java’s Multithreading Concepts . . . . . . . . . . . . . . . . . . . . . . . . . 73 Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Locking in JDK 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 Locking Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 Understanding Thread Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 Deadlocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 Race Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Starvation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 tions . . . . . . . . . . . . . . . . . . . . . . . 104 5165CH00_FM.qxd 11/16/05 11:58 AM Page vii ■ CONTENTS vii Thread Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 Using Thread Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 Stopping,Suspending,Destroying,and Resuming . . . . . . . . . . . 106 Thread States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 More on Blocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Multithreading with Swing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 Threading Best Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 FAQs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 ■ CHAPTER 5 The DvdDatabase Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 Creating the Classes Required for the DvdDatabase Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 The DVD Class:A Value Object . . . . . . . . . . . . . . . . . . . . . . . . . 119 Discussion Point:Handling Exceptions Not Listed in the Supplied Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 The DvdDatabase Class:A Façade . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 Accessing the Data:The DvdFileAccess Class . . . . . . . . . . . . . . . . . . 137 Discussion Point:Caching Records . . . . . . . . . . . . . . . . . . . . . . 148 The ReservationsManager Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 Discussion Point:Identifying the Owner of the Lock . . . . . . . . . 150 Creating Our Logical Reserve Methods . . . . . . . . . . . . . . . . . . . 154 The Logical Release Method . . . . . . . . . . . . . . . . . . . . . . . . . . . 155 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160 FAQs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160 ■ CHAPTER 6 Networking with RMI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163 What Is Serialization? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164 Using the serialver Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 The Serialization Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166 Customizing Serialization with the Externalizable Interface . . . . 169 Introducing RMI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171 The Delivery Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173 The Pros and Cons of Using RMI as a Networking Protocol . . . . 174 The Classes and Interfaces of RMI . . . . . . . . . . . . . . . . . . . . . . 175 What Is an RMI Factory? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196 FAQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196 5165CH00_FM.qxd 11/16/05 11:58 AM Page viii viii ■ CONTENTS ■ CHAPTER 7 Networking with Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199 Socket Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199 Why Use Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 Socket Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 TCP and UDP Sockets Overview . . . . . . . . . . . . . . . . . . . . . . . . 201 TCP Socket Clients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203 The DvdSocketClient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205 Socket Servers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212 Multicast and Unicast Servers . . . . . . . . . . . . . . . . . . . . . . . . . . 212 Multitasking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212 The Server Socket Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213 The Application Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222 FAQs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222 ■ CHAPTER 8 The Graphical User Interfaces . . . . . . . . . . . . . . . . . . . . . . . . 225 GUI Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226 Layout Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227 Human Interface Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228 Model-View-Controller Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234 Why Use the MVC Pattern? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234 MVC in Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234 Benefits of MVC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236 Drawbacks of MVC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236 Alternatives to MVC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237 Swing and the Abstract Windows Toolkit . . . . . . . . . . . . . . . . . . . . . . 237 Layout Manager Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237 Look and Feel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241 The JLabel Component . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244 The JTextField Component . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245 The JButton Component . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248 The JRadioButton Component . . . . . . . . . . . . . . . . . . . . . . . . . . 249 The JComboBox Component . . . . . . . . . . . . . . . . . . . . . . . . . . . 251 The BorderFactory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251 The JTable Component . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254 The TableModel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255 Using the TableModel with a JTable . . . . . . . . . . . . . . . . . . . . . 259 The JScrollPane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260 5165CH00_FM.qxd 11/16/05 11:58 AM Page ix ■ CONTENTS ix Bringing Denny’s DVDs Together . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262 Application Startup Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262 The Client GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263 Specifying the Database Location . . . . . . . . . . . . . . . . . . . . . . . 273 The Server GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286 Swing Changes in J2SE 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289 Improve Default Look and Feel of Swing . . . . . . . . . . . . . . . . . . 289 Skins Look and Feel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290 Adding Components to Swing Containers Has Been Simplified . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291 FAQs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291 PART 3 ■ ■ ■ Wrap-Up ■ CHAPTER 9 Project Wrap-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295 Thread Safety and Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296 The Choice Between RMI and Sockets . . . . . . . . . . . . . . . . . . . . . . . 296 Benefits of Using a Serialized Objects Over Sockets Solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297 Benefits of Using an RMI Solution . . . . . . . . . . . . . . . . . . . . . . . 299 The MVC Pattern in the GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 Locating the Code Samples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301 Compiling and Packaging the Application . . . . . . . . . . . . . . . . . . . . . 301 Creating a Manifest File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303 Running rmic on the Remote Package . . . . . . . . . . . . . . . . . . . . . . . . 304 Packaging the Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305 Running the Denny’s DVDs Application . . . . . . . . . . . . . . . . . . . . . . . 306 Running the Client Application in Stand-alone Mode . . . . . . . . . 307 Running Denny’s DVDs Server . . . . . . . . . . . . . . . . . . . . . . . . . 307 Running the Client Application in Networked Mode . . . . . . . . . . 309 Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309 Packaging Your Submission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321 FAQs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322 ■ INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325

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by Terry Camerlengo, Andrew Monkhouse| 2005| 361 pages| 3.672| English

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Author:Terry Camerlengo, Andrew Monkhouse
Publication Year:2005
ISBN:1590595165
Pages:361
Language:English
File Size:3.672
Format:PDF
Price:FREE
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