Chapter 11, Problem 4PE

Explanation of Solution

Program:

File name: “Division.java”

//Define an abstract class named Division

public abstract class Division

{

    //Declare required instance variables

    protected String divisionTitle;

    protected int acctNum;

    //Define the Division function

    public Division(String title, int acct)

    {

//Set the company’s division name and the account number

        divisionTitle = title;

        acctNum = acct;

    }

    //Define the function display()

    public abstract void display();

}

File name: “InternationalDivision.java”

//Define a class named InternationalDivision

//inheriting the class Division

public class InternationalDivision extends Division

{

    //Declare required instance variables

    protected String country;

    protected String language;

    //Define the overriden method InternationalDivision()

 public InternationalDivision(String title, int acct, String cty, String lang)

    {

        //Call the superclass method

        super(title, acct);

        //Set the country in which the division is located

        //and the language spoken

        country = cty;

        language = lang;

    }

    //Define the function display()

    public void display()

    {

        //Print the result

System.out.println("International Division: " + divisionTitle +

         "  Acct #" + acctNum + "\nLocated in " + country +

         " Language is " + language);

    }

}

File name: “DomesticDivision.java”

//Define a class named DomesticDivision

//inheriting the class Division

public class DomesticDivision extends Division

{

    //Declare required instance variable

    protected String state;

    //Define the overriden method DomesticDivision

    public DomesticDivision(String title, int acct, String st)

    {

        //Call the superclass method

        super(title, acct);

        //Set the state in which the division is located

        state = st;

    }

    //Define the function display()

    public void display()

    {

        //Print the result

        System...