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
    • Storing Text in Strings
    • Displaying Strings in Programs
    • Using Special Characters in Strings
    • Pasting Strings Together
    • Using Other Variables with Strings
    • Advanced String Handling
    • Workshop: Presenting Credits
    • Summary
    • Q&A
    • Quiz
    • Activities
  • 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
  • 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

The following questions will test your knowledge of the care and feeding of a string.

Questions

1. My friend concatenates. Should I report him to the authorities?
   1. No. It's only illegal during the winter months.
   2. Yes, but not until I sell the story to Real TV first.
   3. No. All he's doing is pasting two strings together in a program.
2. Why is the word String capitalized, while int and others are not?
   1. String is a full word, but int ain't.
   2. Like all objects in Java, String has a capitalized name.
   3. Poor quality control at Sun Microsystems.
3. Which of the following characters will put a single quote in a string?
   1. <QUOTE>
   2. \'
   3. '

Answers

1. c. Concatenation is just another word for pasting, joining, melding, or otherwise connecting two strings together. It uses the + and += operators.
2. b. The types of objects available in Java are all capitalized, which is the main reason variable names have a lowercase first letter. It makes it harder to mistake them for objects.
3. b. The single backslash is what begins one of the special characters that can be inserted into strings.

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