That we can use objects as instance variables (String is an object). This is called Composition. If we think of an object as a machine, the instance variables represent the gears. We don’t want …

Our analysis models should... ...show connections and interactions among these people, things and concepts. ...show the business situation in enough detail to evaluate possible designs. …

Upcasting refers to the mechanism in which an object from a subclass is assigned to a variable declared of the superclass type. No special operator is required since the subclass object "is …

For each object you refer to, you have to specify the type of object, kind of object, or behavior of the object. You cannot perform assignments between dissimilar objects, which prevents you …

Chapter 1 Thinking Ob ject-Orien ted Although the fundamen tal features of what w eno w call ob ject-orien ted program- ming w ere in v en ted in the 1960's, ob ject orien ted languages really …

To create an object inside the computer program, we must provide a definition for objects—how they behave and what kinds of information they maintain —called a class.

The purpose of Object-Oriented (OO) design is to define the classes (and their relationships) that are needed to build a system that meets the requirements contained in the SRS