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● http://www.ngohaianh.info 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❍ ● 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● http://www.ngohaianh.info 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❍ ● Getting Input from the User How Applet2 Works❍ ● http://www.ngohaianh.info 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❍ ● The Subtraction Operator Example: Using the Subtraction Operator❍ Example: Multiple Subtractions Using Mixed Data Types❍ Example: Casting a Result to a Different Data Type❍ ● The Multiplication Operator Example: Multiplication and Data Types❍ ● The Division Operator Example: Integer Versus Floating-Point Division❍ ● The Modulo Operator● The Increment Operator● The Decrement Operator● Example: Using Mathematical Calculations in an Applet How Applet5 Works❍ ● 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❍ ● Summary● Review Questions● Review Exercises● http://www.ngohaianh.info Chapter 8 Expressions Types of Expressions● Expressions Within Expressions● Comparison Operators Example: Using Comparison Operators❍ ● Logical Operators Example: Using Logical Operators❍ Example: Using Multiple Logical Operators❍ Example: Combining Different Comparison and Logical Operators❍ ● 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❍ ● The switch Statement Example: Using the break Statement Correctly❍ Example: Using the switch Statement in a Program❍ ● Summary● Review Questions● Review Exercises● http://www.ngohaianh.info Chapter 10 The while and do-while Loops The while Loop Example: Using a while Loop❍ Example: Using a while Loop in a Program❍ ● The do-while Loop Example: Using a do-while Loop❍ Example: Using a do-while Loop in a Program❍ ● 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● http://www.ngohaianh.info Review Exercises● Chapter 13 Arrays An Introduction to Arrays Example: Creating an Array❍ Example: Using a Variable as a Subscript❍ ● Multidimensional Arrays Example: Creating a Two-Dimensional Array❍ ● 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❍ ● Example: Using a Subclass in a Program● Overriding Methods of the Superclass● The this Keyword● Summary● Review Questions● Review Exercises● http://www.ngohaianh.info 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❍ ● Creating Fonts Example: Creating a Font with Multiple Styles❍ ● http://www.ngohaianh.info 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❍ ● 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❍ ● TextFields TextField Methods❍ Example: Using Echo Characters❍ ● Summary● Review Questions● Review Exercises● http://www.ngohaianh.info 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❍ ● 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❍ ● The TextArea Control Example: Creating a TextArea Control❍ Methods of the TextArea Class❍ ● 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● http://www.ngohaianh.info [...]... Internet history Want to know why? Turn the page and keep reading Clayton Walnum, May 1996 http://www.ngohaianh.info Chapter 1 Java Overview CONTENTS q The Java Story q Introducing Java q Java Programs q The Java Developer's Kit q Where Is Java? q Example: Installing HotJava q Example: Installing the JDK q Summary q Review Questions q Review Exercises Anyone who's had anything to do with computers in... q Chapter 36 Appendix B Glossary Appendix C IDEs and Tools q IDEs r r Java+ r q Diva JavaMaker Tools r r VbToJava r q AppletGen PortaFilter Summary Credits Java By Example Copyright© 1996 by Que® Corporation All rights reserved Printed in the United States of America No part of this book may be used or reproduced in any form or by any means, or stored in a database or retrieval system, without prior... Example: Using a Thread in an Applet Deriving a Class from Thread r r q Example: Creating a Thread Class Example: Using a Separate Thread in an Applet Synchronizing Multiple Threads r Example: Using a Synchronized Method r Understanding ThreadApplet3 q Summary q Review Questions q Review Exercises Chapter 32 Writing Java Applications q About Java Applications q The Simplest Java Application r r q Example: ... the Java compiler to locate and report type conflicts q Compiled Before you can run a program written in the Java language, the program must be compiled by the Java compiler The compilation results in a "byte-code" file that, while similar to a machine-code file, can be executed under any operating system that has a Java interpreter This interpreter reads in the byte-code file and translates the byte-code... Explorer 3, which features Java support Example: Installing HotJava The HotJava browser is contained in a self-extracting compressed file, which you may download from Sun's Web site at http:/ /java. sun.com After you extract HotJava's many files (there's a ton of them!) by double-clicking the file, the extraction program uncompresses the files and stores them in a folder named HOTJAVA Once the files are... whose Internet Explorer 3 (currently in beta) offers Java support After more than five years of development, Java has found its home Figure 1.2 : The new Netscape Navigator 2.0 Web browser is Java capable Introducing Java By now, you may be curious why Java is considered such a powerful tool for Internet development projects You already know that Java is a simplified version of C++ Anyone who has struggled... the C:\CLASSES directory by typing cd c:\classes at the DOS prompt 3 Type javac filename .java, where filename .java is the name of the Java source-code file you want to compile After compilation is complete, you should have a file called filename.class in the directory, where filename is the same program name you used for the java source-code file The class file is the compiled Java program 4 Create an... HotJava q Using Java' s Documentation Creator r Javadoc Tags r Example: Using Doc Tags r Example: Documenting an Applet r Javadoc Options q Using the Disassembler q Using the C Header Generator q Using the Debugger q Summary q Review Questions q Review Exercises Chapter 34 Using the Compiler q What the Compiler Does q Running the Compiler r Setting the Class Path r Specifying the Target Directory r Example: ... examine the HOTJAVA folder, you'll see the directory structure shown in Figure 1.7 The BIN folder contains the main HotJava application (HOTJAVA.EXE), as well as many of the Java environment's tools, including the compiler, interpreter, and profiler The LIB folder contains a number of other files needed for HotJava: Figure 1.7 : After extraction, the HOTJAVA directory will contain all of HotJava's files... reasons why Java is so suitable for Web applications What's the difference between a Java applet and a Java stand-alone application? Why are Java applets considered to be platform neutral? How does an Applet work within an HTML document? What are the two benefits of Java that make it an Internet-saavy language? Review Exercises 1 Explore the many resources available to Java programmers on the Java WWW . 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. Glossary Appendix C IDEs and Tools IDEs Diva❍ Java+ ❍ JavaMaker❍ ● Tools AppletGen❍ VbToJava❍ PortaFilter❍ ● Summary● Credits Java By Example Copyright© 1996 by Que® Corporation All rights reserved Writing Java Applications About Java Applications● The Simplest Java Application Example: Building an Application❍ Example: Getting an Application's Arguments❍ ● Windowed Applications Example: