Java By Example docx

Java

By Example

Clayton Walnum

C O N T E N T S

Introduction

● Who This Book Is For

● Hardware and Software Requirements

● Compiling the Programs in This Book

● A Word to the Wise

● On to the Wonderful World of Java

Chapter 1 Java Overview

● The Java Story

● Introducing Java

● Java Programs

● The Java Developer's Kit

● Where Is Java?

● Example: Installing HotJava

● Example: Installing the JDK

● Summary

● Review Questions

● Review Exercises

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Chapter 2 Running Java Applets

The Sample Java Applets

❍ The Appletviewer Tool

❍ Example: Running TicTacToe

❍ The Animator Applet

❍ The BarChart Applet

❍ Other Demo Applets

●

Adding Applets to an HTML Document

❍ Optional Attributes for Applets

❍ Applet Parameters

❍ Non-Java Browsers

❍ Example: A Java-Powered Home Page

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● Summary

● Review Questions

● Review Exercises

Chapter 3 Applets and the Internet

Local and Remote Applets

❍ Local Applets

❍ Remote Applets

●

● Clients and Servers

● Security

● Example: Your Pages on the Web

● Summary

● Review Questions

● Review Exercises

Chapter 4 Object-Oriented Programming Concepts

● From Switches to Objects

● An Obvious, Yet Brilliant, Solution

● Object-Oriented Programming

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❍ Encapsulation

❍ Classes as Data Types

❍ Inheritance

❍ Polymorphism

❍ Example: Encapsulation, Inheritance, and Polymorphism

● Summary

● Review Questions

● Review Exercises

Chapter 5 Constants and Variables

● Constants

● Variables

● Naming Constants and Variables

● Example: Creating Your Own Identifiers

Data Types

❍ Integer Values

❍ Floating-Point Values

❍ Character Values

❍ Boolean Values

●

Variable Scope

❍ Example: Determining a Variable's Scope

●

● Summary

● Review Questions

● Review Exercises

Chapter 6 Simple Input and Output

● Windows and Graphics

Displaying Text in an Applet

❍ Example: Creating and Running Applet1

❍ How Applet1 Works

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Getting Input from the User

❍ How Applet2 Works

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❍ Example: Retrieving text from a TextField control

❍ How Applet3 Works

● Displaying Numerical Values

● Summary

● Review Questions

● Review Exercises

Chapter 7 Math Operators

The Addition Operator

❍ Example: Using the Addition Operator

❍ Example: Multiple Additions

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The Subtraction Operator

❍ Example: Using the Subtraction Operator

❍ Example: Multiple Subtractions Using Mixed Data Types

❍ Example: Casting a Result to a Different Data Type

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The Multiplication Operator

❍ Example: Multiplication and Data Types

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The Division Operator

❍ Example: Integer Versus Floating-Point Division

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● The Modulo Operator

● The Increment Operator

● The Decrement Operator

Example: Using Mathematical Calculations in an Applet

❍ How Applet5 Works

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The Order of Operations

❍ Example: Order of Operations

❍ Example: More Order of Operations

❍ Example: Still More Order of Operations

❍ Example: One Last Order of Operations

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● Summary

● Review Questions

● Review Exercises

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Chapter 8 Expressions

● Types of Expressions

● Expressions Within Expressions

Comparison Operators

❍ Example: Using Comparison Operators

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Logical Operators

❍ Example: Using Logical Operators

❍ Example: Using Multiple Logical Operators

❍ Example: Combining Different Comparison and Logical Operators

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● Writing Logical Expressions

● Order of Operations

● Summary

● Review Questions

● Review Exercises

Chapter 9 The if and switch Statements

● Controlling Program Flow

● Program Flow and Branching

The if statement

❍ Example: The Form of an if Statement

❍ Multiple if Statements

❍ Multiple-Line if Statements

❍ The else Clause

❍ Example: Using the if Statement in a Program

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The switch Statement

❍ Example: Using the break Statement Correctly

❍ Example: Using the switch Statement in a Program

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● Summary

● Review Questions

● Review Exercises

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Chapter 10 The while and do-while Loops

The while Loop

❍ Example: Using a while Loop

❍ Example: Using a while Loop in a Program

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The do-while Loop

❍ Example: Using a do-while Loop

❍ Example: Using a do-while Loop in a Program

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● Summary

● Review Questions

● Review Exercises

Chapter 11 The for Loop

● Introducing the for Loop

● Example: Using a for Loop

● Example: Using a for Loop in a Program

● Changing the Increment Value

● Example: Looping with Different Increments

● Using Variables in Loops

● Example: Controlling for Loops with Variables

● Summary

● Review Questions

● Review Exercises

Chapter 12 Functions

● The Top-Down Approach to Programming

● Example: Using Functions as Subroutines

● Defining and Calling Functions

● Example: Using Functions to Return Values

● Example: Putting Functions to Work

● Summary

● Review Questions

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● Review Exercises

Chapter 13 Arrays

An Introduction to Arrays

❍ Example: Creating an Array

❍ Example: Using a Variable as a Subscript

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Multidimensional Arrays

❍ Example: Creating a Two-Dimensional Array

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● Example: Using Two-Dimensional Arrays in an Applet

● Summary

● Review Questions

● Review Exercises

Chapter 14 Classes

Classes and Objects

❍ Defining a Simple Class

❍ Declaring Fields for a Class

❍ Defining a Constructor

❍ Example: Creating an Object by Calling a Constructor

❍ Defining Methods

●

● Example: Using Classes in Applets

● Understanding the Applet

Using Inheritance

❍ Creating a Subclass

❍ Adding Fields and Methods to the Subclass

❍ Example: Adding Fields and Methods

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● Example: Using a Subclass in a Program

● Overriding Methods of the Superclass

● The this Keyword

● Summary

● Review Questions

● Review Exercises

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Chapter 15 Writing a Simple Applet

● The Simplest Java Applet

● The Five Stages of an Applet's Life Cycle

● Example: Overriding the Life Cycle Methods

● Summary

● Review Questions

● Review Exercises

Chapter 16 Drawing Graphics

● The Applet's Canvas

● Example: Using the Coordinate System

● Drawing Shapes

● Example: Drawing a Rectangle

● Example: Drawing Other Shapes

Understanding the ShapeApplet Applet

❍ Drawing Ovals

❍ Drawing Arcs

❍ Example: Drawing Arcs in an Applet

❍ Drawing Polygons

●

● Summary

● Review Questions

● Review Exercises

Chapter 17 Graphical Text

Dealing with Graphical Text

❍ Getting Font Attributes

❍ Example: Displaying Font Information

❍ Getting Font Metrics

❍ Example: Displaying Font Metrics

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Creating Fonts

❍ Example: Creating a Font with Multiple Styles

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❍ Using the Font

❍ Example: Displaying Different Sized Fonts

● Summary

● Review Questions

● Review Exercises

Chapter 18 Label and Button Controls

Labels

❍ Example: Creating a Label

❍ Methods of the Label Class

●

Buttons

❍ Example: Adding a Button to an Applet

❍ Handling Multiple-Button Events

❍ Example: Handling Multiple Buttons in an Applet

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● Summary

● Review Questions

● Review Exercises

Chapter 19 Checkbox and TextField Controls

Checkboxes

❍ Example: Creating Nonexclusive Checkboxes

❍ Checkbox Groups

❍ Checkbox Methods

❍ Example: Handling Checkboxes in an Applet

❍ Responding to a Checkbox Event

❍ Example: Handling Checkbox Events in an Applet

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TextFields

❍ TextField Methods

❍ Example: Using Echo Characters

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● Summary

● Review Questions

● Review Exercises

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Chapter 20 Choice Menu, Text Area, and Scrolling

List Controls

Choice Menus

❍ Example: Creating a Choice Menu

❍ Choice Menu Methods

❍ Example: Responding to Menu Events in an Applet

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Scrolling Lists

❍ Example: Creating a Single-Selection List

❍ Example: Creating a Multiple-Selection List

❍ Example: Creating a Scrolling List

❍ Methods of the List Class

❍ Example: Using a Scrolling List in an Applet

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The TextArea Control

❍ Example: Creating a TextArea Control

❍ Methods of the TextArea Class

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● Summary

● Review Questions

● Review Exercises

Chapter 21 Scrollbar and Canvas Controls

Scrollbars

❍ Example: Creating a Scrollbar

❍ Responding to a Scrollbar

❍ Example: Using a Scrollbar in an Applet

❍ Canvases

❍ Example: Using a Canvas in an Applet

●

● Summary

● Review Questions

● Review Exercises

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Chapter 22 Panels and Layout Managers

Panels

❍ Example: Creating and Using Panels

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● Layout Managers

The FlowLayout Manager

❍ Example: Creating a FlowLayout Manager

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The GridLayout Manager

❍ Creating a GridLayout Manager

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The BorderLayout Manager

❍ Creating a BorderLayout Manager

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The CardLayout Manager

❍ The CardLayout Manager Methods

❍ Example: Creating a CardLayout Manager

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The GridBagLayout Manager

❍ Creating and Setting the GridBagLayout Manager

❍ Creating and Setting a GridBagConstraints Object

❍ Example: Using a GridBagLayout Manager in an Applet

❍ Understanding the GridBagApplet Applet

●

● Summary

● Review Questions

● Review Exercises

Chapter 23 Windows and Menu Bars

Displaying a Window

❍ Example: Displaying a Window in an Applet

❍ Example: Creating a Window Class

❍ Example: Adding Components to a Window

●

Using Menu Bars

❍ Creating and Setting a MenuBar Object

❍ Adding Menus to a Menu Bar

❍ Adding Menu Items to Menus

❍ Example: Using a Menu Bar in a Frame Window

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● Summary

● Review Questions

● Review Exercises

Chapter 24 Dialog Boxes

Using a Dialog Box

❍ Creating the Dialog Box

❍ Creating the Dialog Box's Layout

❍ Displaying the Dialog Box

❍ Removing the Dialog Box

❍ Methods of the Dialog Class

❍ Example: A Dialog Box for Text Input

●

● Summary

● Review Questions

● Review Exercises

Chapter 25 Mouse and Keyboard Events

● The Event Object

The Mouse

❍ Handling Mouse Clicks

❍ Example: Using Mouse Clicks in an Applet

❍ Handling Mouse Movement

❍ Example: Responding to Mouse Movement in an Applet

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The Keyboard

❍ Responding to Key Presses

❍ Predefined Key Constants

❍ Key Modifiers

❍ Example: Using Key Presses in an Applet

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Handling Events Directly

❍ Example: Overriding handleEvent() in an Applet

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● Summary

● Review Questions

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● Review Exercises

Chapter 26 Configurable Applets

● Types of Users

Parameters and Applets

❍ Example: Setting and Retrieving a Parameter's Value

❍ Example: Using a Parameter in an Applet

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Multiple Parameters

❍ Example: Using Multiple Parameters in an Applet

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Default Parameter Values

❍ Example: Using Default Parameters in an Applet

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● Summary

● Review Questions

● Review Exercises

Chapter 27 Images and Sounds

● Image Types

Loading and Displaying an Image

❍ Example: Using the getDocumentBase() Method

❍ Example: Using the getCodeBase() Method

❍ Loading an Image

❍ Displaying an Image

❍ Example: Displaying an Image in an Applet

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Playing a Sound

❍ Example: Using the play() Method

❍ Example: Playing a Sound in an Applet

❍ Controlling Sounds

❍ Example: Using an AudioClip in an Applet

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● Summary

● Review Questions

● Review Exercises

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Chapter 28 Communications

URL Objects

❍ Example: Creating an URL Object

❍ URL Exceptions

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The Applet Context

❍ Example: Using an AppletContext to Link to an URL

❍ Example: Using an AppletContext in an Applet

●

● Creating a "Favorite URLs" Applet

● Summary

● Review Questions

● Review Exercises

Chapter 29 Packages and Interfaces

Packages

❍ Creating Your Own Packages

❍ Example: Creating a Simple Package

❍ Example: Using the New Package

❍ Example: Extending the Package

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Interfaces

❍ The Basic Interface

❍ Example: Creating an Interface

❍ Implementing an Interface

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● Summary

● Review Questions

● Review Exercises

Chapter 30 Exceptions

● Java's Exceptions

● Throwing an Exception

● Types of Exceptions

● Determining the Exceptions to Handle

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❍ Example: Catching a Runtime Exception

❍ Example: Handling Multiple Exceptions

● Summary

● Review Questions

● Review Exercises

Chapter 31 Threads

● Two Kinds of Threads

Converting a Class to a Thread

❍ Declaring the Class as Implementing the Runnable Interface

❍ Implementing the run() Method

❍ Declaring a Thread Object

❍ Creating and Starting the Thread Object

❍ Stopping the Thread

❍ Example: Using a Thread in an Applet

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Deriving a Class from Thread

❍ Example: Creating a Thread Class

❍ Example: Using a Separate Thread in an Applet

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Synchronizing Multiple Threads

❍ Example: Using a Synchronized Method

❍ Understanding ThreadApplet3

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● Summary

● Review Questions

● Review Exercises

Chapter 32 Writing Java Applications

● About Java Applications

The Simplest Java Application

❍ Example: Building an Application

❍ Example: Getting an Application's Arguments

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Windowed Applications

❍ Example: Changing an Applet to an Application

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