C# 2010 for Programmers, Fourth Edition

4. Introduction to Classes and Objects

Objectives

In this chapter you’ll learn:

• What classes, objects, methods and instance variables are.

• How to declare a class and use it to create an object.

• How to implement a class’s behaviors as methods.

• How to implement a class’s attributes as instance variables and properties.

• How to call an object’s methods to make them perform their tasks.

• The differences between instance variables of a class and local variables of a method.

• How to use a constructor to ensure that an object’s data is initialized when the object is created.

• The differences between value types and reference types.

Nothing can have value without being an object of utility.

—Karl Marx

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