Table Of ContentCONTENTS
Teach Yourself
Java in 21 Days
Professional Reference Edition
by Laura Lemay, Charles L. Perkins and Michael Morrison
C O N T E N T S
Introduction
Day 1 An Introduction to Java Programming
l W hat Is Java?
l Ja va's Past, Present, and Future
l W hy Learn Java?
m J ava Is Platform Independent
m J ava Is Object Oriented
m J ava Is Easy to Learn
l G etting Started Programming in Java
m G etting a Java Development Environment
m I nstalling the JDK and Sample Files
m C onfiguring the JDK
m C reating a Java Application
m C reating a Java Applet
l T roubleshooting
l S ummary
l Q &A
Day 2 Object-Oriented Programming and Java
l T hinking in Objects: An Analogy
l O bjects and Classes
l B ehavior and Attributes
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m A ttributes
m B ehavior
m C reating a Class
l In heritance, Interfaces, and Packages
m I nheritance
m C reating a Class Hierarchy
m H ow Inheritance Works
m S ingle and Multiple Inheritance
m I nterfaces and Packages
m C reating a Subclass
l S ummary
l Q &A
Day 3 Java Basics
l S tatements and Expressions
l V ariables and Data Types
m D eclaring Variables
m N otes on Variable Names
m V ariable Types
m A ssigning Values to Variables
l C omments
l L iterals
m N umber Literals
m B oolean Literals
m C haracter Literals
m S tring Literals
l E xpressions and Operators
m A rithmetic
m M ore About Assignment
m I ncrementing and Decrementing
m C omparisons
m L ogical Operators
m B itwise Operators
m O perator Precedence
l S tring Arithmetic
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l S ummary
l Q &A
Day 4 Working with Objects
l C reating New Objects
m U sing new
m W hat new Does
m A Note on Memory Management
l A ccessing and Setting Class and Instance Variables
m G etting Values
m C hanging Values
m C lass Variables
l C alling Methods
m C lass Methods
l R eferences to Objects
l C asting and Converting Objects and Primitive Types
m C asting Primitive Types
m C asting Objects
m C onverting Primitive Types to Objects and Vice Versa
l O dds and Ends
m C omparing Objects
m D etermining the Class of an Object
l C lass and Object Reflection (Java 1.1)
l T he Java Class Library
l S ummary
l Q &A
Day 5 Arrays, Conditionals, and Loops
l A rrays
m D eclaring Array Variables
m C reating Array Objects
m A ccessing Array Elements
m C hanging Array Elements
m M ultidimensional Arrays
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l B lock Statements
l i f Conditionals
m T he Conditional Operator
l s witch Conditionals
l f or Loops
l w hile and do Loops
m w hile Loops
m d o...while Loops
l B reaking Out of Loops
m L abeled Loops
l S ummary
l Q &A
Day 6 Creating Classes and Applications in Java
l D efining Classes
l C reating Instance and Class Variables
m D efining Instance Variables
m C onstants
m C lass Variables
l C reating Methods
m D efining Methods
m T he this Keyword
m V ariable Scope and Method Definitions
m P assing Arguments to Methods
m C lass Methods
l C reating Java Applications
m H elper Classes
l Ja va Applications and Command-Line Arguments
m P assing Arguments to Java Programs
m H andling Arguments in Your Java Program
l S ummary
l Q &A
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Day 7 More About Methods
l C reating Methods with the Same Name, Different Arguments
l C onstructor Methods
m B asic Constructors
m C alling Another Constructor
m O verloading Constructors
l O verriding Methods
m C reating Methods That Override Existing Methods
m C alling the Original Method
m O verriding Constructors
l F inalizer Methods
l S ummary
l Q &A
Day 8 Java Applet Basics
l H ow Applets and Applications Are Different
l C reating Applets
m M ajor Applet Activities
m A Simple Applet
l In cluding an Applet on a Web Page
m T he <APPLET> Tag
m T esting the Result
m M aking Java Applets Available to the Web
l M ore About the <APPLET> Tag
m A LIGN
m H SPACE and VSPACE
m C ODE and CODEBASE
l Ja va Archives
l P assing Parameters to Applets
l S ummary
l Q &A
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Day 9 Graphics, Fonts, and Color
l T he Graphics Class
m T he Graphics Coordinate System
l D rawing and Filling
m L ines
m R ectangles
m P olygons
m O vals
m A rcs
m A Simple Graphics Example
m C opying and Clearing
l T ext and Fonts
m C reating Font Objects
m D rawing Characters and Strings
m F inding Out Information About a Font
l C olor
m U sing Color Objects
m T esting and Setting the Current Colors
m A Simple Color Example
l S ummary
l Q &A
Day 10 Simple Animation and Threads
l C reating Animation in Java
m P ainting and Repainting
m S tarting and Stopping an Applet's Execution
m T he Missing Link: Threads
m P utting It Together
l T hreads: What They Are and Why You Need Them
m W riting Applets with Threads
m A nother Look at the Digital Clock
l R educing Animation Flicker
m F licker and How to Avoid It
m H ow to Override update()
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m S olution One: Don't Clear the Screen
m S olution Two: Redraw Only What You Have To
l S ummary
l Q &A
Day 11 More Animation, Images, and Sound
l R etrieving and Using Images
m G etting Images
m D rawing Images
m A Note About Image Observers
m M odifying Images
l C reating Animation Using Images
m A n Example: Neko
l R etrieving and Using Sounds
l U sing Animation Packages
m S un's Animator Applet
m D imension X's Liquid Motion
l M ore About Flicker: Double-Buffering
m C reating Applets with Double-Buffering
m A Note on Disposing Graphics Contexts
m A n Example: Checkers Revisited
l S ummary
l Q &A
Day 12 Managing Simple Events and Interactivity
l M ouse Clicks
m M ouse Down and Mouse Up Events
m A n Example: Spots
m D ouble-Clicks
l M ouse Movements
m M ouse Drag and Mouse Move Events
m M ouse Enter and Mouse Exit Events
m A n Example: Drawing Lines
m K eyboard Events
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m T he keyDown() and keyUp() Methods
m D efault Keys
m A n Example: Entering, Displaying, and Moving Characters
m T esting for Modifier Keys and Multiple Mouse Buttons
l T he awt Event Handler
l S ummary
l Q &A
Day 13 Creating User Interfaces with the awt
l A n awt Overview
l T he Basic User Interface Components
m L abels
m B uttons
m C heck Boxes
m R adio Buttons
m C hoice Menus
m T ext Fields
l P anels and Layout
m L ayout Managers: An Overview
m T he FlowLayout Class
m G rid Layouts
m B order Layouts
m C ard Layouts
m G rid Bag Layouts
m I nsets
l H andling UI Actions and Events
l N esting Panels and Components
m N ested Panels
m E vents and Nested Panels
l M ore UI Components
m T ext Areas
m S crolling Lists
m S crollbars and Sliders
m C anvases
l M ore UI Events
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l F un with Components
l A Complete Example: RGB-to-HSB Converter
m D esigning and Creating the Applet Layout
m D efining the Subpanels
m H andling the Actions
m U pdating the Result
m T he Complete Source Code
l U p and Coming in Java 1.1
l S ummary
l Q &A
Day 14 Windows, Networking, and Other Tidbits
l W indows, Menus, and Dialog Boxes
m T he awt Window Classes
m F rames
m C losing Windows
m M enus
m D ialog Boxes
m C ursors
m W indow Events
m S tandalone awt Applications
l N etworking in Java
m C reating Links Inside Applets
m O pening Web Connections
m o penStream()
m S ockets
m C hanges to Sockets for Java 1.1
l O ther Applet Hints
m T he showStatus() Method
m A pplet Information
m C ommunicating Between Applets
l S ummary
l Q &A
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Day 15 Modifiers, Access Control, and Class Design
l M odifiers
l C ontrolling Access to Methods and Variables
m W hy Access Control Is Important
m T he Four Ps of Protection
m M ethod Protection and Inheritance
m I nstance Variable Protection and Accessor Methods
l C lass Variables and Methods
l F inalizing Classes, Methods, and Variables
m F inalizing Classes
m F inalizing Variables
m F inalizing Methods
l A bstract Classes and Methods
l S ummary
l Q &A
Day 16 Packages and Interfaces
l P rogramming in the Large and Programming in the Small
l W hat Are Packages?
l U sing Packages
m F ull Package and Class Names
m T he import Command
m N ame Conflicts
m A Note About CLASSPATH and Where Classes Are Located
l C reating Your Own Packages
m P ick a Package Name
m C reate the Directory Structure
m U se package to Add Your Class to a Package
m P ackages and Class Protection
l W hat Are Interfaces?
m T he Problem of Single Inheritance
m A bstract Design and Concrete Implementation
m I nterfaces and Classes
l Im plementing and Using Interfaces
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