Object-Oriented Design and Patterns

Reviewer: Dr. Alexander Yakhnis, ayakhnis@brockport.edu I like the book and have taught Spring 2004 Object-oriented Development (CSC 429 ) course at SUNY College at Brockport, New York. I have taught the material from Chapter I through 6. I have also used the material from Ch. 8 Object-Oriented Frameworks for 2 Independent Study Courses with 2 students during Summer 2004. I find chapters 4 and 5 the best hands on introduction to Design Patterns that makes the corresponding material of The Gang of Four book quite understandable and it is better by far than many other attempts to introduce design patterns. The author plays to an advantage the use of Java and its libraries already based on some of the design patterns that many other authors have not exploited despite existence of Design Patterns presented in Java. I also find the choice of 5 patterns: Iterator, Strategy, Observer, Composite and Decorator very tasteful as well as very useful. The author's problem examples illustrating the use of design patterns, particularly, the Invoice example is excellent. The material in Ch. 4 on Interface Types leads to design patterns gracefully, and one can obviously recognize Strategy patter playing important role unnamed yet. This looks to me a good arrangement. Exercises reinforce the ideas very well. If some more exercises will be added that would be a nice improvement. The author succeeds in making clear the concept of Object-Oriented Frameworks in introductory textbook. Separation of a framework and applications built on it is very well presented. Use of sequence diagrams helps to understand OO Framework. I would suggest that the concept of a Use Case and collaboration diagrams as alternative to sequence diagrams helps to get into the heart of how a framework achieves a goal relevant to a user. An excellent example of such a goal is presented in Ch. 8 for the Graph Framework. When I was teaching the course I have attempted to replace The Object-Oriented Design Process from Ch. 2 by elements of Craig Larman textbook Applying UML and Patterns (Completely different patterns there than the 5 mentioned above). It helped me to reinforce software engineering concepts taught by Craig Larman that I have taught in software engineering course and also provided good point of view for understanding the OO Frameworks where some of the goals served by an OO Framework are viewed as Use Cases. I would use the book again for CSC 429 Object-Oriented Development without hesitation should I be teaching this course again. Also, I continue to use OO Design and Patterns as a source of material for Independent Studies. Finally, I congratulate the author for making available and understandable the concept of Design Patterns as practical way of building OO software at undergraduate level. Preface......Page 4 Contents......Page 14 1: A Crash Course in Java......Page 21 1.1 "Hello, World!" in Java......Page 22 1.2 Documentation Comments......Page 26 1.3 Primitive Types......Page 29 1.5 Object References......Page 32 1.6 Parameter Passing......Page 34 1.7 Packages......Page 36 1.8 Basic Exception Handling......Page 38 1.9 Strings......Page 41 1.11 Array Lists and Linked Lists......Page 43 1.12 Arrays......Page 46 1.13 Static Fields and Methods......Page 48 1.14 Programming Style......Page 49 Exercises......Page 51 2: The Object-Oriented Design Process......Page 55 2.1 From Problem to Code......Page 56 2.2 The Object and Class Concepts......Page 59 2.3 Identifying Classes......Page 61 2.4 Identifying Responsibilities......Page 65 2.5 Relationships Between Classes......Page 66 2.6 Use Cases......Page 68 2.7 CRC Cards......Page 70 2.8 UML Class Diagrams......Page 73 2.9 Sequence Diagrams......Page 78 2.10 State Diagrams......Page 80 2.11 Using javadoc for Design Documentation......Page 81 2.12 Case Study: A Voice Mail System......Page 82 Exercises......Page 105 3: Guidelines for Class Design......Page 109 3.1 An Overview of the Date Classes in the Java Library......Page 110 3.2 Designing a Day Class......Page 114 3.3 Three Implementations of the Day Class......Page 118 3.4 The Importance of Encapsulation......Page 129 3.5 Analyzing the Quality of an Interface......Page 138 3.6 Programming by Contract......Page 142 3.7 Unit Testing......Page 151 Exercises......Page 153 4: Interface Types and Polymorphism......Page 157 4.1 The Icon Interface Type......Page 158 4.2 Polymorphism......Page 163 4.3 The Comparable Interface Type......Page 164 4.4 The Comparator Interface Type......Page 167 4.5 Anonymous Classes......Page 168 4.6 Frames and User Interface Components......Page 171 4.7 User Interface Actions......Page 173 4.8 Timers......Page 177 4.9 Drawing Shapes......Page 179 4.10 Designing an Interface Type......Page 184 Exercises......Page 190 5: Patterns and GUI Programming......Page 193 5.1 The Iterator as a Pattern......Page 194 5.2 The Pattern Concept......Page 196 5.3 The OBSERVER Pattern......Page 200 5.4 Layout Managers and the STRATEGY Pattern......Page 203 5.5 Components, Containers, and the COMPOSITE Pattern......Page 213 5.6 Scroll Bars and the DECORATOR Pattern......Page 215 5.7 How to Recognize Patterns......Page 218 5.8 Putting Patterns to Work......Page 220 Exercises......Page 232 6: Inheritance and Abstract Classes......Page 235 6.1 The Concept of Inheritance......Page 236 6.2 Graphics Programming with Inheritance......Page 243 6.3 Abstract Classes......Page 248 6.4 The TEMPLATE METHOD Pattern......Page 256 6.5 Protected Interfaces......Page 260 6.6 The Hierarchy of Swing Components......Page 263 6.7 The Hierarchy of Standard Geometric Shapes......Page 267 6.8 The Hierarchy of Exception Classes......Page 272 6.9 When Not to Use Inheritance......Page 274 Exercises......Page 278 7: The Java Object Model......Page 281 7.1 The Java Type System......Page 282 7.2 Type Inquiry......Page 288 7.3 The Object Class......Page 291 7.4 Shallow and Deep Copy......Page 300 7.5 Serialization......Page 305 7.6 Reflection......Page 307 7.7 Generic Types......Page 314 7.8 JavaBeans Components......Page 322 Exercises......Page 336 8: Frameworks......Page 339 8.1 Frameworks......Page 340 8.2 Applets as a Simple Framework......Page 341 8.3 The Collections Framework......Page 344 8.4 A Graph Editor Framework......Page 354 8.5 Enhancing the Graph Editor Framework......Page 373 Exercises......Page 377 9: Multithreading......Page 381 9.1 Thread Basics......Page 382 9.2 Thread Synchronization......Page 390 9.3 Animations......Page 407 Exercises......Page 414 10: More Design Patterns......Page 417 10.1 The ADAPTER Pattern......Page 418 10.2 Actions and the COMMAND Pattern......Page 421 10.3 The FACTORY METHOD Pattern......Page 426 10.4 The PROXY Pattern......Page 428 10.5 The SINGLETON Pattern......Page 433 10.6 The VISITOR Pattern......Page 435 10.7 Other Design Patterns......Page 442 Exercises......Page 444 Glossary......Page 447 Index......Page 457

An object-oriented design text that’s student oriented too!

Now updated to reflect the innovations of Java 5.0, Cay Horstmann’s Object-Oriented Design & Patterns, 2nd Edition continues to offer a student-oriented guide to object-oriented design.

Drawing from his extensive experience as a programmer and teacher, Horstmann helps you appreciate the value of object-oriented design principles, and gives you a context for applying these principles and techniques in your own designs. Throughout the text, outstanding pedagogy, carefully developed exercises and examples, and a strong emphasis on problem solving make object-oriented design principles accessible to readers with limited programming experience.

Cay Horstmann’s Object-Oriented Design & Patterns, 2nd Edition:

• Integrates the use of Java 5.0 constructs throughout, including generics and the java.util.concurrent library.

• Presents high-interest examples, including ones from the Java 5.0 library and user-interface programming.

• Uses concepts such as interfaces, inner classes, reflection, and multithreading to introduce advanced Java language concepts.

• Encourages you to master topics in object-oriented design, user-interface programming, and practical software development techniques.

• Illustrates design patterns and their application using the Swing user interface toolkit and the Java collections library.

• Introduces programming tools such as BlueJ, javadoc, and JUnit.

• Provides a crash course in Java for readers who know C++.

Other Wiley books by Cay Horstmann

Big Java, Second Edition, 0-471-70615-9

Java Concepts, Fourth Edition, 0-471-69704-4

Big C++ (with Timothy Budd), 0-471-47063-5

Computing Concepts with C++ Essentials, Third Edition, 0-471-16437-2

An object-oriented design text that's student oriented too! Now updated to reflect the innovations of Java 5.0, Cay Horstmann's Object-Oriented Design & Patterns, 2nd Edition continues to offer a student-oriented guide to object-oriented design. Drawing from his extensive experience as a programmer and teacher, Horstmann helps you appreciate the value of object-oriented design principles, and gives you a context for applying these principles and techniques in your own designs. Throughout the text, outstanding pedagogy, carefully developed exercises and examples, and a strong emphasis on problem solving make object-oriented design principles accessible to readers with limited programming experience. Cay Horstmann's Object-Oriented Design & Patterns, 2nd * Integrates the use of Java 5.0 constructs throughout, including generics and the java.util.concurrent library. * Presents high-interest examples, including ones from the Java 5.0 library and user-interface programming. * Uses concepts such as interfaces, inner classes, reflection, and multithreading to introduce advanced Java language concepts. * Encourages you to master topics in object-oriented design, user-interface programming, and practical software development techniques. * Illustrates design patterns and their application using the Swing user interface toolkit and the Java collections library. * Introduces programming tools such as BlueJ, javadoc, and JUnit. * Provides a crash course in Java for readers who know C++. Other Wiley books by Cay Horstmann Big Java, Second Edition, 0-471-70615-9 Java Concepts, Fourth Edition, 0-471-69704-4 Big C++ (with Timothy Budd), 0-471-47063-5 Computing Concepts with C++ Essentials, Third Edition, 0-471-16437-2 Now updated to reflect the innovations of Java 5.0, Cay Horstmann's Object-Oriented Design & Patterns, 2nd Edition continues to offer a student-oriented guide to object-oriented design. Drawing from his extensive experience as a programmer and teacher, Horstmann helps you appreciate the value of object-oriented design principles, and gives you a context for applying these principles and techniques in your own designs. Throughout the text, outstanding pedagogy, carefully developed exercises and examples, and a strong emphasis on problem solving make object-oriented design principles accessible to readers with limited programming experience. * Integrates the use of Java 5.0 constructs throughout, including generics and the java.util.concurrent library. * Presents high-interest examples, including ones from the Java 5.0 library and user-interface programming. * Uses concepts such as interfaces, inner classes, reflection, and multithreading to introduce advanced Java language concepts. * Encourages you to master topics in object-oriented design, user-interface programming, and practical software development techniques. * Illustrates design patterns and their application using the Swing user interface toolkit and the Java collections library. * Introduces programming tools such as BlueJ, javadoc, and JUnit. * Provides a crash course in Java for readers who know C++.--Publisher description Now updated to reflect the innovations of Java 5.0, Cay Horstmann's Object-Oriented Design & Patterns, 2nd Edition continues to offer a student-oriented guide to object-oriented design that can fit into your curriculum in a variety of ways (see the inside front cover).Drawing from his extensive experience as a programmer and teacher, Horstmann helps students appreciate the value of object-oriented design principles, and gives them a context for applying these principles and techniques in their own designs. Throughout the text, outstanding pedagogy, carefully developed exercises and examples, and a strong emphasis on problem solving make object-oriented design principles accessible to readers with limited programming experience. Introduces object-oriented fundamentals critical to designing software and shows how to implement design techniques Horstmann's clear, hands-on presentation and outstanding writing style help readers to better understand the material. Useful sidebars cover relevant data structures. C++ notes throughout the book illustrate object-oriented programming concepts that are not available with Java. An online UML editor (designed by the author) allows readers to create and test UML code