3. More on Object-Oriented Programming

This chapter is a continuation of the previous chapter on object-oriented programming. Here you will learn about This exposition will still be at basic level: access control and modification of classes will be treated in the programming language chapter.

The main example used to explain object-oriented programming at practical level is an extension of drawing letters on the computer screen: we shall add more variation such as upper and lower case letters, digits, and blinking objects.