the Java program bellow is not completed. add a new HourlyEmployee class to this project, so that it makes the main function work as shown in the sample output. Specifically you will need: To define HourlyEmployee as a sub-class of Employee (so it extends Employee). Two additional instance variables: an hourlyRate (dollars/hour) and an expectedHoursPerWeek. Both of these should have datatype double. A constructor that has all instance variables as parameters An input() function that overrides and uses its super-class input function, also inputting the two variables above. A weeksPay() method that returns the expectedHoursPerWeek times hourlyRate. An accessor (getter) and mutator (setter) for expectedHoursPerWeek An output() method that overrides and uses its super-class output function, also outputting the expected hours per week. Code: import java.util.Scanner; import java.util.ArrayList; class Main { publicstaticvoid main(String[] args) { Scanner scan = new Scanner(System.in); int i; String input = "starting"; // initialize so loop condition below is true ArrayList people = new ArrayList(); System.out.println("This program allows you to enter info about people."); // a for-loop can have any condition you want: // in this case, count with i, but repeat until user enters 'q' for(i = 0; input.charAt(0) != 'q'; i++) { System.out.print("Is person #" + (i + 1) + " an employee? (Enter 'y' for Yes, 'n' for No, or 'q' to stop entering employees) "); input = scan.nextLine(); if (input.charAt(0) == 'y') // Employee: { System.out.print("Is this person on salary, hourly, or neither? (Enter 's', 'h', or 'n') "); input = scan.nextLine(); if (input.charAt(0) == 's') { // SalariedEmployee object people.add(new SalariedEmployee()); } elseif (input.charAt(0) == 'h') { // HourlyEmployee people.add(new HourlyEmployee()); } else { // Employee object people.add(new Employee()); } } elseif (input.charAt(0) == 'n') { // Person object people.add(new Person()); } else// neither 'y' nor 'n': no Person. Maybe quit? continue; // skip the rest of the loop body // input this person's data. Because of polymorphism, // the appropriate input function will be called // (not necessarily the one defined in the Person class) people.get(i).input(); // this function is defined in the Person class only, // but it works for all because of inheritance: people.get(i).sayGoodMorning(); if(people.get(i) instanceof SalariedEmployee) // if this is a SalariedEmployee { System.out.println("Your salary is $" + ((SalariedEmployee)people.get(i)).monthsPay() + " per month."); } elseif(people.get(i) instanceof HourlyEmployee) // if this is an HourlyEmployee { // Save a reference to the object, for easier coding: HourlyEmployee he = (HourlyEmployee)people.get(i); System.out.println("Your weekly pay is $" + he.weeksPay()); double hoursEntered = he.getHoursPerWeek(); he.setHoursPerWeek(40); System.out.println("If you worked 40 hours per week, your weekly pay would be $" + he.weeksPay()); // return to original valued entered by user: he.setHoursPerWeek(hoursEntered); } } // end of for loop System.out.println("Here are all the people:"); for(Person p : people) p.output(); } } /* Sample Output: This program allows you to enter info about people. Is person #1 an employee? (Enter 'y' for Yes, 'n' for No, or 'q' to stop entering employees) y Is this person on salary, hourly, or neither? (Enter 's', 'h', or 'n') h Please enter first name: Ed Please enter last name: Sheeran Please enter Social Security Number: 123-45-6789 Please enter country of citizenship: UK Please enter hourly rate: $100 Please enter expected hours to work each week: 30 Good morning, Ed Sheeran Your weekly pay is $3000.0 If you worked 40 hours per week, your weekly pay would be $4000.0 Is person #2 an employee? (Enter 'y' for Yes, 'n' for No, or 'q' to stop entering employees) y Is this person on salary, hourly, or neither? (Enter 's', 'h', or 'n') s Please enter first name: John Please enter last name: Legend Please enter Social Security Number: 111-11-1111 Please enter country of citizenship: USA Please enter salary: 1000000 Good morning, John Legend Your salary is $83333.33333333333 per month. Is person #3 an employee? (Enter 'y' for Yes, 'n' for No, or 'q' to stop entering employees) y Is this person on salary, hourly, or neither? (Enter 's', 'h', or 'n') n Please enter first name: Ray Please enter last name: LaMontagne Please enter Social Security Number: 222-22-2222 Please enter country of citizenship: USA Good morning, Ray LaMontagne Is person #4 an employee? (Enter 'y' for Yes, 'n' for No, or 'q' to stop entering employees) n Please enter first name: Bruno Please enter last name: Mars Good morning, Bruno Mars Is person #5 an employee? (Enter 'y' for Yes, 'n' for No, or 'q' to stop entering employees) q Here are all the people: 1 Ed Sheeran 123-45-6789 UK currently working 30.0 hours per week 2 John Legend 111-11-1111 USA 3 Ray LaMontagne 222-22-2222 USA 4 Bruno Mars *

the Java program bellow is not completed. add a new HourlyEmployee class to this project, so that it makes the main function work as shown in the sample output. Specifically you will need: To define HourlyEmployee as a sub-class of Employee (so it extends Employee). Two additional instance variables: an hourlyRate (dollars/hour) and an expectedHoursPerWeek. Both of these should have datatype double. A constructor that has all instance variables as parameters An input() function that overrides and uses its super-class input function, also inputting the two variables above. A weeksPay() method that returns the expectedHoursPerWeek times hourlyRate. An accessor (getter) and mutator (setter) for expectedHoursPerWeek An output() method that overrides and uses its super-class output function, also outputting the expected hours per week. Code: import java.util.Scanner; import java.util.ArrayList; class Main { publicstaticvoid main(String[] args) { Scanner scan = new Scanner(System.in); int i; String input = "starting"; // initialize so loop condition below is true ArrayList people = new ArrayList(); System.out.println("This program allows you to enter info about people."); // a for-loop can have any condition you want: // in this case, count with i, but repeat until user enters 'q' for(i = 0; input.charAt(0) != 'q'; i++) { System.out.print("Is person #" + (i + 1) + " an employee? (Enter 'y' for Yes, 'n' for No, or 'q' to stop entering employees) "); input = scan.nextLine(); if (input.charAt(0) == 'y') // Employee: { System.out.print("Is this person on salary, hourly, or neither? (Enter 's', 'h', or 'n') "); input = scan.nextLine(); if (input.charAt(0) == 's') { // SalariedEmployee object people.add(new SalariedEmployee()); } elseif (input.charAt(0) == 'h') { // HourlyEmployee people.add(new HourlyEmployee()); } else { // Employee object people.add(new Employee()); } } elseif (input.charAt(0) == 'n') { // Person object people.add(new Person()); } else// neither 'y' nor 'n': no Person. Maybe quit? continue; // skip the rest of the loop body // input this person's data. Because of polymorphism, // the appropriate input function will be called // (not necessarily the one defined in the Person class) people.get(i).input(); // this function is defined in the Person class only, // but it works for all because of inheritance: people.get(i).sayGoodMorning(); if(people.get(i) instanceof SalariedEmployee) // if this is a SalariedEmployee { System.out.println("Your salary is $" + ((SalariedEmployee)people.get(i)).monthsPay() + " per month."); } elseif(people.get(i) instanceof HourlyEmployee) // if this is an HourlyEmployee { // Save a reference to the object, for easier coding: HourlyEmployee he = (HourlyEmployee)people.get(i); System.out.println("Your weekly pay is $" + he.weeksPay()); double hoursEntered = he.getHoursPerWeek(); he.setHoursPerWeek(40); System.out.println("If you worked 40 hours per week, your weekly pay would be $" + he.weeksPay()); // return to original valued entered by user: he.setHoursPerWeek(hoursEntered); } } // end of for loop System.out.println("Here are all the people:"); for(Person p : people) p.output(); } } /* Sample Output: This program allows you to enter info about people. Is person #1 an employee? (Enter 'y' for Yes, 'n' for No, or 'q' to stop entering employees) y Is this person on salary, hourly, or neither? (Enter 's', 'h', or 'n') h Please enter first name: Ed Please enter last name: Sheeran Please enter Social Security Number: 123-45-6789 Please enter country of citizenship: UK Please enter hourly rate: $100 Please enter expected hours to work each week: 30 Good morning, Ed Sheeran Your weekly pay is $3000.0 If you worked 40 hours per week, your weekly pay would be $4000.0 Is person #2 an employee? (Enter 'y' for Yes, 'n' for No, or 'q' to stop entering employees) y Is this person on salary, hourly, or neither? (Enter 's', 'h', or 'n') s Please enter first name: John Please enter last name: Legend Please enter Social Security Number: 111-11-1111 Please enter country of citizenship: USA Please enter salary: 1000000 Good morning, John Legend Your salary is $83333.33333333333 per month. Is person #3 an employee? (Enter 'y' for Yes, 'n' for No, or 'q' to stop entering employees) y Is this person on salary, hourly, or neither? (Enter 's', 'h', or 'n') n Please enter first name: Ray Please enter last name: LaMontagne Please enter Social Security Number: 222-22-2222 Please enter country of citizenship: USA Good morning, Ray LaMontagne Is person #4 an employee? (Enter 'y' for Yes, 'n' for No, or 'q' to stop entering employees) n Please enter first name: Bruno Please enter last name: Mars Good morning, Bruno Mars Is person #5 an employee? (Enter 'y' for Yes, 'n' for No, or 'q' to stop entering employees) q Here are all the people: 1 Ed Sheeran 123-45-6789 UK currently working 30.0 hours per week 2 John Legend 111-11-1111 USA 3 Ray LaMontagne 222-22-2222 USA 4 Bruno Mars *

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

the Java program bellow is not completed.

add a new HourlyEmployee class to this project, so that it makes the main function work as shown in the sample output. Specifically you will need:

To define HourlyEmployee as a sub-class of Employee (so it extends Employee).
Two additional instance variables: an hourlyRate (dollars/hour) and an expectedHoursPerWeek. Both of these should have datatype double.
A constructor that has all instance variables as parameters
An input() function that overrides and uses its super-class input function, also inputting the two variables above.
A weeksPay() method that returns the expectedHoursPerWeek times hourlyRate.
An accessor (getter) and mutator (setter) for expectedHoursPerWeek
An output() method that overrides and uses its super-class output function, also outputting the expected hours per week.

Code:

import java.util.Scanner;

import java.util.ArrayList;

class Main

{

publicstaticvoid main(String[] args)

{

Scanner scan = new Scanner(System.in);

int i;

String input = "starting"; // initialize so loop condition below is true

ArrayList<Person> people = new ArrayList<Person>();

System.out.println("This program allows you to enter info about people.");

// a for-loop can have any condition you want:

// in this case, count with i, but repeat until user enters 'q'

for(i = 0; input.charAt(0) != 'q'; i++)

{

System.out.print("Is person #" + (i + 1) + " an employee? (Enter 'y' for Yes, 'n' for No, or 'q' to stop entering employees) ");

input = scan.nextLine();

if (input.charAt(0) == 'y') // Employee:

{

System.out.print("Is this person on salary, hourly, or neither? (Enter 's', 'h', or 'n') ");

input = scan.nextLine();

if (input.charAt(0) == 's')

{ // SalariedEmployee object

people.add(new SalariedEmployee());

}

elseif (input.charAt(0) == 'h')

{ // HourlyEmployee

people.add(new HourlyEmployee());

}

else

{ // Employee object

people.add(new Employee());

}

elseif (input.charAt(0) == 'n')

{ // Person object

people.add(new Person());

}

else// neither 'y' nor 'n': no Person. Maybe quit?

continue; // skip the rest of the loop body

// input this person's data. Because of polymorphism,

// the appropriate input function will be called

// (not necessarily the one defined in the Person class)

people.get(i).input();

// this function is defined in the Person class only,

// but it works for all because of inheritance:

people.get(i).sayGoodMorning();

if(people.get(i) instanceof SalariedEmployee) // if this is a SalariedEmployee

{

System.out.println("Your salary is $"

+ ((SalariedEmployee)people.get(i)).monthsPay()

+ " per month.");

}

elseif(people.get(i) instanceof HourlyEmployee) // if this is an HourlyEmployee

{

// Save a reference to the object, for easier coding:

HourlyEmployee he = (HourlyEmployee)people.get(i);

System.out.println("Your weekly pay is $"

+ he.weeksPay());

double hoursEntered = he.getHoursPerWeek();

he.setHoursPerWeek(40);

System.out.println("If you worked 40 hours per week, your weekly pay would be $"

+ he.weeksPay());

// return to original valued entered by user:

he.setHoursPerWeek(hoursEntered);

}

} // end of for loop

System.out.println("Here are all the people:");

for(Person p : people)

p.output();

}

/* Sample Output:

This program allows you to enter info about people.

Is person #1 an employee? (Enter 'y' for Yes, 'n' for No, or 'q' to stop entering employees) y

Is this person on salary, hourly, or neither? (Enter 's', 'h', or 'n') h

Please enter first name: Ed

Please enter last name: Sheeran

Please enter Social Security Number: 123-45-6789

Please enter country of citizenship: UK

Please enter hourly rate: $100

Please enter expected hours to work each week: 30

Good morning, Ed Sheeran

Your weekly pay is $3000.0

If you worked 40 hours per week, your weekly pay would be $4000.0

Is person #2 an employee? (Enter 'y' for Yes, 'n' for No, or 'q' to stop entering employees) y

Is this person on salary, hourly, or neither? (Enter 's', 'h', or 'n') s

Please enter first name: John

Please enter last name: Legend

Please enter Social Security Number: 111-11-1111

Please enter country of citizenship: USA

Please enter salary: 1000000

Good morning, John Legend

Your salary is $83333.33333333333 per month.

Is person #3 an employee? (Enter 'y' for Yes, 'n' for No, or 'q' to stop entering employees) y

Is this person on salary, hourly, or neither? (Enter 's', 'h', or 'n') n

Please enter first name: Ray

Please enter last name: LaMontagne

Please enter Social Security Number: 222-22-2222

Please enter country of citizenship: USA

Good morning, Ray LaMontagne

Is person #4 an employee? (Enter 'y' for Yes, 'n' for No, or 'q' to stop entering employees) n

Please enter first name: Bruno

Please enter last name: Mars

Good morning, Bruno Mars

Is person #5 an employee? (Enter 'y' for Yes, 'n' for No, or 'q' to stop entering employees) q

Here are all the people:

1 Ed Sheeran 123-45-6789 UK

currently working 30.0 hours per week

2 John Legend 111-11-1111 USA

3 Ray LaMontagne 222-22-2222 USA

4 Bruno Mars

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