CHAPTER 9C — Object Data

Classic programmed-learning exercises, refreshed for modern Java and presented in the current MrStyner.com portfolio style.

Modern Java noteThis archive has been refreshed for Java 25 LTS. Core language concepts remain useful, while outdated setup instructions and browser-era Java are labeled or replaced. Java 26 is the current feature release; Java 25 is used here as the stable teaching baseline.
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created 01/22/06; revised 08/08/08

CHAPTER 9C — Object Data

This chapter briefly discusses objects and how to use them. The objects discussed here are defined in the standard software packages that come with Java. Later chapters discuss how you can define your own objects.

Chapter Topics:

  • Classes
  • Objects
  • Reference variables
  • String objects
  • Running methods of objects
  • Methods that create String objects
  • Type wrappers
  • Packages

Chapter 25 and following discuss objects in greater detail than this chapter.

QUESTION 1:

(Review: ) What are the two divisions of data in Java?

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