Specifications

Sun Services

Java™ Programming Language

Module 2, slide 7 of 26

Classes as Blueprints for Objects

• In manufacturing, a blueprint describes a device from

which many physical devices are constructed.

• In software, a class is a description of an object:

• A class describes the data that each object includes.

• A class describes the behaviors that each object

exhibits.

• In Java technology, classes support three key features

of object-oriented programming (OOP):

• Encapsulation

• Inheritance

• Polymorphism