Chapter 9, Problem 1E

Program Plan Intro

Interaction with super class

Program plan:

• Create a class “Employee”,
  • Define the method “getHours()” to return “40”.
  • Define the method “getSalary()” to return “40000.0”.
  • Define the method “getVacationDays()” to return “10”.
  • Define the method “getVacationForm()” to return “yellow”.
• Create a class “Marketer” that extends the super class “Employee”,
  • Define the method “advertise()” ,
    • Print the string.
      • Define the method “getSalary()”,
        • Call the method “getSalary()” of super class and return the updated value.
      • Define the method “main()”,
        • Create object for “Marketer” class.
        • Call the method “advertise()”.
        • Print the value returned from “getsalary()”.

Program Description Answer

This program demonstrates the class that accompanies the other law firm classes.

Explanation of Solution

Program:

File name: “Employee.java”

//Create a class

public class Employee

{

    //Define the method

    public int getHours()

    {

        //Retunr "40"

        return 40;

    }

    //Define the method

    public double getSalary()

    {

        //Return "40000.0"

        return 40000.0;

    }

    //Define the method

    public int getVacationDays()

    {

        //Return "10"

        return 10;

    }

    //Define the method

    public String getVacationForm ()

    {

        //Return "yellow"

        return " yellow";

    }

}

File name: “Marketer.java”

//Create a class

public class Marketer extends Employee

{

    //Define the method advertise()

    public static void advertise()

    {

        //Print the string

        System.out.println("Act now, while supplies last!");

    }

    //Define the method

    public double getSalary()

    {

/*Call the method of super class and return the updated value*/

        return super.getSalary() + 10000;

    }

    //Define the main() method

    public static void main(String[] args)

    {

        //Create object

        Marketer m=new Marketer();

        //Call the method

        m.advertise();

        //Print the value returned from getSalary()

        System.out.println("$"+m.getSalary());

    }

}

Sample Output

Output:

Act now, while supplies last!

$50000.0