Fain Y. - Java Programming for Kids, Parents and GrandParents [2004, PDF, ENG]

PREFACE .............................................................................................. IX
ACKNOWLEDGEMENTS ............................................................................. XI
CHAPTER 1. YOUR FIRST JAVA PROGRAM .................................................... 1
How to Install Java on Your Computer .................................................................................... 2
Three Main Steps in Programming .......................................................................................... 6
Step 1 – Type the Program ...................................................................................................... 6
Step 2 – Compile the Program ................................................................................................. 8
Step 3 – Run the Program ........................................................................................................ 9
Additional Reading ................................................................................................................. 10
CHAPTER 2. MOVING TO ECLIPSE.............................................................. 11
Installing Eclipse ..................................................................................................................... 11
Getting Started with Eclipse ................................................................................................... 13
Creating Programs in Eclipse ................................................................................................. 15
Running HelloWorld in Eclipse ........................................................................................... 16
How HelloWorld Works? .................................................................................................... 17
Additional Reading ................................................................................................................. 20
Practice .................................................................................................................................... 20
Practice for Smarty Pants ....................................................................................................... 21
CHAPTER 3. PET AND FISH – JAVA CLASSES .............................................. 22
Classes and Objects ................................................................................................................. 22
Data Types............................................................................................................................... 25
Creation of a Pet ..................................................................................................................... 28
Inheritance – a Fish is Also a Pet ............................................................................................ 33
Method Overriding ................................................................................................................. 37
Additional Reading ................................................................................................................. 38
Practice .................................................................................................................................... 38
Practice for Smarty Pants ....................................................................................................... 39 Java Programming for Kids, Parents and Grandparents v

CHAPTER 4. JAVA BUILDING BLOCKS ....................................................... 40
Program Comments ................................................................................................................ 40
Making Decisions with if Statements .................................................................................... 41
Logical Operators ................................................................................................................... 43
The logical not here is applied to the expression in parentheses. ........................................... 44
Conditional operator ............................................................................................................... 44
Using else if ....................................................................................................................... 44
Making Decisions With switch Statement .......................................................................... 45
How Long Variables Live?...................................................................................................... 46
Special Methods: Constructors ............................................................................................... 47
The Keyword this ................................................................................................................. 48
Arrays ...................................................................................................................................... 49
Repeating Actions with Loops ................................................................................................ 51
Additional Reading ................................................................................................................. 54
Practice .................................................................................................................................... 54
Practice for Smarty Pants ....................................................................................................... 54
CHAPTER 5. A GRAPHICAL CALCULATOR ................................................... 55
AWT and Swing ...................................................................................................................... 55
Packages and Import Statements ............................................................................................ 55
Major Swing Elements ............................................................................................................ 56
Layout Managers .................................................................................................................... 59
Flow Layout .......................................................................................................................... 59
Grid Layout........................................................................................................................... 60
Border Layout ....................................................................................................................... 62
Combining Layout Managers................................................................................................. 62
Box Layout ........................................................................................................................... 65
Grid Bag Layout.................................................................................................................... 66
Card Layout .......................................................................................................................... 68
Can I Create Windows Without Using Layouts? .................................................................... 68
Window Components .............................................................................................................. 68
Additional Reading ................................................................................................................. 72
Practice .................................................................................................................................... 72
Practice for Smarty Pants ....................................................................................................... 73

CHAPTER 6. WINDOW EVENTS ................................................................. 74
Interfaces ................................................................................................................................. 75
Action Listener ........................................................................................................................ 76
Registering Components with ActionListeneter ........................................................... 78
What’s the Source of an Event? ............................................................................................. 79
How to Pass Data Between Classes ......................................................................................... 81
Finishing Calculator ................................................................................................................ 83
Some Other Event Listeners .................................................................................................. 89
How to Use Adapters ............................................................................................................... 90
Additional Reading ................................................................................................................. 91
Practice .................................................................................................................................... 91
Practice for Smarty Pants ....................................................................................................... 91
CHAPTER 7. THE TIC-TAC-TOE APPLET ..................................................... 92
Learning HTML in 15 Minutes .............................................................................................. 93
Writing Applets Using AWT ................................................................................................... 96
How to Write AWT Applets.................................................................................................... 97
Writing a Tic-Tac-Toe Game .................................................................................................. 99
The Strategy .......................................................................................................................... 99
The Code ............................................................................................................................ 100
Additional Reading ............................................................................................................... 110
Practice .................................................................................................................................. 110
Practice for Smarty Pants ..................................................................................................... 111
CHAPTER 8. PROGRAM ERRORS - EXCEPTIONS ........................................ 112
Reading the Stack Trace ....................................................................................................... 113
Genealogical Tree of Exceptions ........................................................................................... 114
The keyword throws ........................................................................................................... 117
The Keyword finally ...................................................................................................... 118
The Keyword throw .......................................................................................................... 119
Creating New Exceptions ...................................................................................................... 121
Additional Reading ............................................................................................................... 123
Practice .................................................................................................................................. 123 Java Programming for Kids, Parents and Grandparents vii

Practice for Smarty Pants ..................................................................................................... 123
CHAPTER 9. SAVING THE GAME SCORE ................................................... 124
Byte Streams ......................................................................................................................... 124
Buffered Streams .................................................................................................................. 127
Command-Line Arguments .................................................................................................. 129
Reading Text Files ................................................................................................................. 132
Class File ............................................................................................................................ 135
Additional Reading ............................................................................................................... 137
Practice .................................................................................................................................. 137
Practice for Smarty Pants ..................................................................................................... 138
CHAPTER 10. MORE JAVA BUILDING BLOCKS ......................................... 139
Working with Date and Time Values.................................................................................... 139
Method Overloading ............................................................................................................. 140
Reading Keyboard Input ...................................................................................................... 143
More on Java Packages ......................................................................................................... 145
Access Levels ......................................................................................................................... 148
Getting Back to Arrays ........................................................................................................ 151
Class ArrayList ................................................................................................................. 154
Additional Reading ............................................................................................................... 158
Practice .................................................................................................................................. 158
Practice for Smarty Pants ..................................................................................................... 159
CHAPTER 11. BACK TO GRAPHICS – THE PING PONG GAME ..................... 160
The Strategy .......................................................................................................................... 160
The Code ............................................................................................................................... 161
Java Threads Basics .............................................................................................................. 170
Finishing Ping Pong Game .................................................................................................... 175
What to Read Next on Game Programming ......................................................................... 185
Additional Reading ............................................................................................................... 186
Practice .................................................................................................................................. 186

Practice for Smarty Pants ..................................................................................................... 186
APPENDIX A. JAVA ARCHIVES - JARS ...................................................... 188
Additional Reading ............................................................................................................... 189
APPENDIX B. ECLIPSE TIPS .................................................................... 190
Eclipse Debugger ................................................................................................................... 191
APPENDIX C. HOW TO PUBLISH A WEB PAGE ......................................... 194
Additional Reading ............................................................................................................... 197
Practice .................................................................................................................................. 197
INDEX .................................................................................................... 198