Sams Teach Yourself Java 2 in 24 Hours

By Rogers Cadenhead

• Table of Contents
  • Copyright
  • About the Author
  • About the Technical Editor
  • Acknowledgments
  • We Want to Hear from You!
  • Reader Services
  • Introduction
  • Hour 1. Becoming a Programmer
  • Hour 2. Writing Your First Program
  • Hour 3. Vacationing in Java
  • Hour 4. Understanding How Java Programs Work
  • Part II: Learning the Basics of Programming
  • Hour 5. Storing and Changing Information in a Program
  • Hour 6. Using Strings to Communicate
  • Hour 7. Using Conditional Tests to Make Decisions
  • Hour 8. Repeating an Action with Loops
  • Part III: Working with Information in New Ways
  • Hour 9. Storing Information with Arrays
  • Hour 10. Creating Your First Object
  • Hour 11. Describing What Your Object Is Like
  • Hour 12. Making the Most of Existing Objects
  • Part IV: Programming a Graphical User Interface
  • Hour 13. Building a Simple User Interface
  • Hour 14. Laying Out a User Interface
  • Hour 15. Responding to User Input
  • Hour 16. Building a Complex User Interface
  • Part V: Creating Multimedia Programs
  • Hour 17. Creating Interactive Web Programs
  • Hour 18. Handling Errors in a Program
  • Hour 19. Creating a Threaded Program
  • Hour 20. Reading and Writing Files
  • Part VI: Creating Multimedia Programs
  • Hour 21. Using Fonts and Color
  • Hour 22. Playing Sound Files
  • Hour 23. Working with Graphics
    • Using Graphics
    • Drawing Lines and Shapes
    • Workshop: Baking a Pie Graph
    • Summary
    • Q&A
    • Quiz
    • Activities
  • Hour 24. Creating Animation
  • Part VII: Appendixes
  • Appendix A. Tackling New Features of Java 2 Version 1.4
  • Appendix B. Using the Java 2 Software Development Kit
  • Appendix C. Programming with the Java 2 Software Development Kit
  • Appendix D. Using Sun ONE Studio
  • Appendix E. Where to Go from Here: Java Resources
  • Appendix F. This Book's Web Site

Quiz

Test whether your Java graphics skills are taking shape by answering the following questions.

Questions

1. What method is used to change the current color before you draw something in a program?
   1. shiftColor()
   2. setColor()
   3. Could you repeat the question?
2. If you want to use the height and width of a component to determine how big something should be drawn, what can you use?
   1. A ruler and a friend who's good at math
   2. getHeight() and getWidth()
   3. getSize().height and getSize().width
3. What societal problem did this hour's first example program call attention to?
   1. Overpopulation
   2. Defaulted student loans
   3. People who compress air in places with signs that clearly indicate it is prohibited, especially restaurants

Answers

1. b. You can use the setBackground() method to set the background color of an applet, and you can use the setColor() method of the Graphics class to select the current color.
2. c.
3. c. Though overpopulation is a pretty big deal, too.

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