xw - Preface xv Chapter13 discusses inheritance and...

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Preface xv • Chapter13 discusses inheritance and polymorphism and how to use them ef- fectively in program design. The effect of inheritance for member accessibil- ity and constructors is explained. We also explain the purpose of abstract classes and abstract methods. • Chapter14 covers GUI and event-driven programming. Only the Swing- based GUI components are covered in this chapter. We show how to use the JOptionPane class for a very simple GUI-based input and output. GUI com- ponents introduced in this chapter include JButton, JLabel, ImageIcon, JTextField, JTextArea, and menu-related classes. We describe the effective use
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