CHAPTER 2

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Introduction to Objects

In this chapter, we will explain the following:

  • What is a class, an object, a field, and a method
  • That an object variable does not hold an object but, rather, a pointer (or reference) to where the object is actually located
  • The distinction between a class variable (also called a static variable) and an instance variable (also called a non-static variable)
  • The distinction between a class method (also called a static method) and an instance method (also called a non-static method)
  • What the access modifiers public, private, and protected mean
  • What is meant by information hiding
  • How to refer to class and instance ...

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