Exam 2: The Concept of Object Orientation

The most generalized class is "thing."

Smalltalk is one of the earlier object-oriented languages.

In object-oriented vocabulary, utility classes are usually called entity classes.

What is object-oriented modeling? How does it differ from Unified Modeling Language (UML)?

Define the differences between abstract and concrete classes.

"Art" is an example of a(n) ________.

The term "interface" must be reinforced by the qualifier "private."

To understand object-oriented technology, methodology, and modeling, we don't need to understand objects.

Virtual objects are created from real life instances.

When you use an ATM, encapsulation ensures that ________.

The same object cannot be described by several states simultaneously.

Define the characteristics of a real object.

Give a superclass for three classes: car, airplane, tank.

Define the differences between business and utility classes.

What is the difference between real objects and virtual objects? Give an example for each.

Attributes of an object constitute what an object ________, while operations describe what it ________.

A class is a(n)________ for a virtual object.

Elaborate on the following: "An identity of an object is unique and unchanging."