Answered Essay: The number of gallons of paint required (15 pts)

A painting company has determined that for every 100 square feet of wall space, one gallon of paint and eight hours of labor will be required. The company charges $20.00 per hour for labor. Write a program that allows the user to enter the number of rooms (10pts) to be painted and the price of the paint per gallon. It should also ask for the square feet of wall space in each room (10 pts). The program should have methods that return the following data:

The number of gallons of paint required (15 pts)

The hours of labor required (15 pts)

The cost of the paint (15 pts)

The labor charges (15 pts)

The total cost of the paint job (15 pts)

Then it should display the data on the screen. (5 pts).

package name paint

To receive full credit make sure you display input dialogs and message dialogs and also comment in every significant line of a code.

Expert Answer


import java.util.*;

class RoomPaint {
private int num_rooms;   // holding number of rooms
private double area_room[]; // an array holding wall space area of each room
private double paint_price;   // price of the paint per gallon
public RoomPaint(int nm, double ar[], double ct){   // Constructor . initializing different members
num_rooms = nm;
area_room = new double[nm];
for (int i = 0; i<nm; i++)
area_room[i] = ar[i];
paint_price = ct;

public double getNumberOfGallons(){   // to get number of gallons of paint as 100 sq ft takes one gallon
double sum = 0;
for (int i = 0; i<num_rooms; i++) //adding wall space area of each room to get total area
sum = sum + area_room[i];
return (sum) / 100;
public double getLaborHours(){         // to get labor hours as 100 sq ft takes one gallon and it takes 8 hours to complete the job
return getNumberOfGallons() * 8;
public double getCostOfPaint(){       // to get the total cost of paint as one gallon charge is paint_price
return getNumberOfGallons() * paint_price;
public double getLaborCharges(){     // to get the total labor charge as per hour charge is 20
return getLaborHours() * 20;
public double getTotalCostOfPaintJob(){ // This is the sum of total cost of paint and total cost of labor
return (getLaborCharges() + getCostOfPaint());


public class DemoPaint {

public static void main(String[] args){

int n;
double cost;
Scanner sc = new Scanner(;
System.out.println(“Enter number of rooms:”);   // Taking input for number of rooms.
n = sc.nextInt();
double[] area = new double[n];
for (int i = 0; i<n; i++){
System.out.println(“Enter area of a wall space in a room ” + (i+1) + “:”); // Taking input for wall space area for each room
area[i] = sc.nextDouble();
System.out.println(“Enter cost of paint per gallon:”); // Taking input for the cost of paint.
cost = sc.nextDouble();
RoomPaint pt = new RoomPaint(n,area,cost);
System.out.println(“The number of gallons of paint required :” +pt.getNumberOfGallons()); // Calculating gallons of paint
System.out.println(“The hours of labor required :”+pt.getLaborHours()); //Calculating Labor hours
System.out.println(“The cost of the paint :”+pt.getCostOfPaint()); //Calculating cost of paint
System.out.println(“The labor charges :”+pt.getLaborCharges()); //Calculating Labor charges
System.out.println(“The total cost of the paint job :”+pt.getTotalCostOfPaintJob()); //Calculating total cost of paint job


Buy Essay
Calculate your paper price
Pages (550 words)
Approximate price: -

Help Me Write My Essay - Reasons:

Best Online Essay Writing Service

We strive to give our customers the best online essay writing experience. We Make sure essays are submitted on time and all the instructions are followed.

Our Writers are Experienced and Professional

Our essay writing service is founded on professional writers who are on stand by to help you any time.

Free Revision Fo all Essays

Sometimes you may require our writers to add on a point to make your essay as customised as possible, we will give you unlimited times to do this. And we will do it for free.

Timely Essay(s)

We understand the frustrations that comes with late essays and our writers are extra careful to not violate this term. Our support team is always engauging our writers to help you have your essay ahead of time.

Customised Essays &100% Confidential

Our Online writing Service has zero torelance for plagiarised papers. We have plagiarism checking tool that generate plagiarism reports just to make sure you are satisfied.

24/7 Customer Support

Our agents are ready to help you around the clock. Please feel free to reach out and enquire about anything.

Try it now!

Calculate the price of your order

Total price:

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.


Let us write that nagging essay.


Submit Your Essay/Homework Instructions

By clicking on the "PLACE ORDER" button, tell us your requires. Be precise for an accurate customised essay. You may also upload any reading materials where applicable.


Pick A & Writer

Our ordering form will provide you with a list of writers and their feedbacks. At step 2, its time select a writer. Our online agents are on stand by to help you just in case.


Editing (OUR PART)

At this stage, our editor will go through your essay and make sure your writer did meet all the instructions.


Receive your Paper

After Editing, your paper will be sent to you via email.

× How can I help you?