Java™ for Programmers: Deitel

8. Classes and Objects: A Deeper Look

Objectives

In this chapter you’ll learn:

• Encapsulation and data hiding.

• The notions of data abstraction and abstract data types (ADTs).

• To use keyword this.

• To use static variables and methods.

• To import static members of a class.

• To use the enum type to create sets of constants with unique identifiers.

• To declare enum constants with parameters.

• To organize classes in packages to promote reuse.

Instead of this absurd division into sexes, they ought to class people as static and dynamic.

—Evelyn Waugh

Is it a world to hide virtues in?

—William Shakespeare

But what, to serve our private ends, Forbids the cheating of our friends?

—Charles Churchill

This above all: to thine own self be true. ...