Object-Oriented Coding - JAVA Programming for Engineers - page 130

The art of object-orientation starts with learning how to think objects.
Consider the following Java program:

On the Web

The source file for the program VirtualDog.java can be found in the
Chapter15folderat www.crcpress.com .

//************************************************************
// File name: VirtualDog.java
// Reference: Chapter 15
//************************************************************
//
//

Java program to demonstrate a classes and objects

// Topics:

// 1. Java application with multiple classes

// 2. Object instantiation

//
// Note:

// 1. Only one class in a file can be public. The public

// class must have the name of the Java source file.

// 2. The "this" operator refers to the current object.

// 3. Class variables are usually declared with private

// accesibility in order to preserve encapsulation

//***********************************
//***********************************
// CLASS Dog
//***********************************
//***********************************
class Dog
{

// Class variables
private int dogNum; // Dog object number
private String dogName; // Dog object name

//************************
// setDogData()
//************************
public void setDogData(int aNum, String aName)
{

this.dogNum = aNum;
this.dogName = aName;

}

//************************
// method bark()
//************************
public void bark()
{

System.out.println("Arf!, Arf!");

}