2. Objects: An Introduction

This chapter introduces classes and objects. Public and private data members along with value-returning methods and void methods with parameters are discussed. How objects are created and how methods are invoked are illustrated using contour diagrams. Contours help the reader have a better understanding of object-oriented concepts by providing visual representation of objects. Constructors are introduced along with multiple objects and classes. Lastly, UML (Universal Modeling Language) class diagrams are illustrated and a complete program implementing a simple class and client program is provided.