Classes and Objects: Object Orientation Philosophy

Abstract

At the beginning of the book we said that computer programs are about processing some input and generating some output from it, possibly also altering the state of some data-holding instance like a file or a database. Although this is certainly true, it does not tell the whole story. In real-world scenarios, computer programs exhibit another characteristic: They are supposed to be of some practical use, and as a result of that, model real-world events and objects.