What Is Inheritance? What Is an Interface? What Is a Package? Questions and Exercises: Object-Oriented Programming Concepts Chapter 3 Language Basics Variables Naming Primitive Data Types Arrays Summary of Variables Questions and Exercises: Variables Operators Assignment, Arithmetic, and Unary ...
Inheritance Basics All men are mortal. Socrates is a man. Therefore Socrates is mortal.—Typical Syllogism Inheritance is a major component of object-oriented programming. Inheritance will allow you to define a very general class, and then later define more specialized classes by simply adding some...
Interface and implementation 85 Class access 86 Summary 87 Reusing Classes （新增批注35条） 89 Composition syntax 89 Inheritance syntax 92 Initializing the base class 94 Delegation 96 Combining composition and inheritance 97 Guaranteeing proper cleanup 99 Name hiding 101 Choosing composition vs.inheritance...
8.1 Basics of Event Handling 383 8.1.1 Example: Handling a Button Click 386 8.1.2 Becoming Comfortable with Inner Classes 391 8.1.3 Creating Listeners Containing a Single Method Call 394 8.1.4 Example: Changing the Look-and-Feel 395 8.1.5 Adapter Classes 399 8.2 Actions...
13.3 Incorporating Inheritance and Polymorphism into the ATM System 425 13.4 ATM Case Study Implementation 431 13.5 Wrap-Up 449 Chapter 14 GUI Components: Part 1 451 14.1 Introduction 452 14.2 Java’s New Nimbus Look-and-Feel 453 14.3 Simple GUI-Based Input/Output wit...
13.3Incorporating Inheritance and Polymorphism into the ATM System 13.4ATM Case Study Implementation 13.5WrapUp Chapter 14 GUI Components: Part 1 14.1Introduction 14.2Javas New Nimbus LookandFeel 14.3Simple GUIBased Input/Output with JOptionPane 14.4Overview of Swing Components 14.5...
In the preceding lessons, you have seen inheritance mentioned several times. In the Java language, classes can be derived from other classes, thereby inheriting fields and methods from those classes. Definitions: A class that is derived from another class is called a subclass (also a derived ...
8．16 (Optional) GUI and Graphics Case Study： Using Objects with Graphics 287 8．17 Wrap-Up 290 Chapter 9 Object-Oriented Programming： Inheritance 298 9．1 Introduction 298 9．2 Superclasses and Subclasses 299 9．3 protected Members 301 9．4 Relationship between Superclasses and Subclass...
Chapter 8: Event Handling 383 8.1 Basics of Event Handling 383 8.1.1 Example: Handling a Button Click 386 8.1.2 Becoming Comfortable with Inner Classes 391 8.1.3 Creating Listeners Containing a Single Method Call 394 8.1.4 Example: Changing the Look-and-Feel 395 ...