TAILIEUCHUNG - Lecture An introduction to object-oriented programming with Java: Chapter 13 - C. Thomas Wu

Chapter 13 - Inheritance and polymorphism. After you have read and studied this chapter, you should be able to: Write programs that are easily extensible and modifiable by applying polymorphism in program design; define reusable classes based on inheritance and abstract classes and abstract methods; differentiate the abstract classes and Java interfaces; define methods, using the protected modifier; parse strings, using a String Tokenizer object. | ©The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Chapter 13 - Chapter 13 Inheritance and Polymorphism Animated Version Introduction to OOP with Java 4th Ed, C. Thomas Wu © The McGraw-Hill Companies, Inc. ©The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Chapter 13 - Chapter 13 Objectives After you have read and studied this chapter, you should be able to Write programs that are easily extensible and modifiable by applying polymorphism in program design. Define reusable classes based on inheritance and abstract classes and abstract methods. Differentiate the abstract classes and Java interfaces. Define methods, using the protected modifier. Parse strings, using a String Tokenizer object. Intro to OOP with Java, C. Thomas Wu ©The McGraw-Hill Companies, Inc. ©The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Chapter 13 - Simple Example We can effectively model similar, but different types of objects using inheritance Suppose we want to model dogs and cats. They are different types of pets. We can define the Pet class and the Dog and Cat classes as the subclasses of the Pet class. Pet Dog Cat Intro to OOP with Java, C. Thomas Wu ©The McGraw-Hill Companies, Inc. ©The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Chapter 13 - The Pet Class class Pet { private String name; public String getName() { return name; } public void setName(String petName) { name = petName; } public String speak( ) { return “I’m your cuddly little pet.”; } } Intro to OOP with Java, C. Thomas Wu ©The McGraw-Hill Companies, Inc. ©The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Chapter 13 - Subclasses of The Pet Class class Cat extends Pet { public String speak( ) { return “Don’t give me orders.\n” + “I speak only when I want to.”; } } class Dog extends Pet { public String fetch( ) { return “Yes, master. .

• Kỹ thuật lập trình
• Object oriented programming
• Object oriented programming with Java
• Programming language
• Java programming language
• String Tokenizer object
• Abstract classes
• Introduction to java programming
• Abstract Classes and Interface
• The abstract Modifier
• The Abstract Calendar Class
• GregorianCalendar subclass
• The GregorianCalendar Class
• Java programming
• Programming with Java
• Abstract methods
• ngôn ngữ lập trình
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• Lecture Web design and development
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• Class shape hierarchy
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• bài tập C
• ngôn ngữ lập trình C
• lý thuyết lập trình C
• tài liệu về ngôn ngữ C
• thủ thuật lập trình với C
• tài liệu lập trình C
• Inheritance
• Polymorphism
• and Abstract Classes
• Interfaces in JAVA
• Programming in Java
• BASIC PRINCIPLES
• UML NOTATION
• VERSUS INTERFACES
• UML DIAGRAMS
• DESIGN PATTERNS
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• C++ programming
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• Java program
• Demonstrating polymorphic behavior
• Declaring interface payable
• Creating class invoice
• Accessing Structure Members
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• Access Functions and Utility Functions
• Using Default Arguments with Constructors
• Default Memberwise Assignment
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• Kỹ thuật lập trình Java
• Java foundation classes
• Abstract windowing toolkit
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• Private inheritance
• Scope resolution
• Levels of inheritance
• Pure virtual functions
• Virtual destructors
• Bài giảng Phát triển ứng dụng Web
• Phát triển ứng dụng Web
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• Autoloading classes
• Anonymous functions
• Abstract class
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• tư liệu lập trình
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• Effect polymorphism
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• Object oriented design
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• Reference data types