9. Visibility

Important

Prerequisite Information

This tutorial assumes that the reader has a knowledge of basic Unix commands and experience working with a command-line text editor (e.g. emacs, vi, etc.). The reader should be familiar with compiling and running Java code contained in named packages, working with the Javadoc tool, and understanding UML Class Diagrams.

To get the most out of this chapter, you should follow along and take notes.

Course-Specific Learning Outcomes

• LO4.e: (Partial) Use visibility modifiers to provide inheritance-based and package-based access protection in a software solution.

Chapter Contents

• 9.1. Introduction
• 9.2. Public and Private Visibility
  • 9.2.1. Public Visibility
  • 9.2.2. Private Visibility
  • 9.2.3. Example 1
  • 9.2.4. Example 2
  • 9.2.5. Example 3
• 9.3. Package Private Visibility
  • 9.3.1. Example 1
  • 9.3.2. Example 2
• 9.4. Protected Visibility
  • 9.4.1. Example 1
  • 9.4.2. Example 2
  • 9.4.3. Example 3
    • 9.4.3.1. More on Inheritance and Visibility
  • 9.4.4. Overload Resolution
  • 9.4.5. Non-Visible Inherited Members
• 9.5. Summary of Visibilities