In this chapter, we have explored three areas that can get you started on the path to thinking in an OO way. Remember that there is no firm list of issues pertaining to the OO thought process. Doing things in an OO way is more of an art than a science. Try to think of your own ways to describe OO thinking.
In Chapter 3, “More Object-Oriented Concepts,” we discuss the object life cycle: it is born, it lives, and it dies. While it is alive, it might transition through many states. For example, a DataBaseReader object is in one state if the database is open and another state if the database is closed. How this is represented depends on the design of the class.