Defining classes In the Smalltalk development environment, you generally define a class (or create a defined class) by subclassing from an existing class. Defining a class consists of the following activities: • You must specify a containing application for the class. • You must be a group member of this application. • You must give the class a unique name. No two classes in your image can have the same name. When you create a class, you become its owner.
