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
    • Getting Your Programs to Listen
    • Setting Up Components to Be Heard
    • Handling User Events
    • Workshop: A Little Lotto Madness
    • Summary
    • Q&A
    • Quiz
    • Activities
  • 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
  • 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

After the LottoMadness program has soured you on games of chance, play a game of skill by answering the following questions.

Questions

1. Why are action events called by that name?
   1. They occur in reaction to something else.
   2. They indicate that some kind of action should be taken in response.
   3. They honor cinematic adventurer Action Jackson.
2. What does this signify as the argument to an addActionListener() method?
   1. "This" listener should be used when an event occurs.
   2. "This" event takes precedence over others.
   3. "This" class of objects will handle the events.
3. Which component stores user input as integers?
   1. JButton
   2. JTextField
   3. Neither does

Answers

1. b. Action events include the click of a button and the selection of an item from a pull-down menu.
2. c. If the name of another class were used as an argument instead of the this statement, that class would receive the events and be expected to handle them.
3. c. JTextField and JTextArea components store their values as text, so their values must be converted before they can be used as integers, floating-point numbers, or other non-text values.

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