Step1 Help

//A painting company has determined that for every 115 square feet of wall space, one gallon of paint and eight hours of labor.

//import javax.swing.JOptionPane; //old code
//I replaced JOptionPane With scanner, it should be fairly easy to understand if you have some problems dont hesitate to ask --verd
import java.util.Scanner;
public class PaintJob {


        private static int SizeToCost = 115;
        private static int PaintToCost = 1;
        private static int LabourToCost = 8;
        private static int LabourCostPerHour = 18;


        public static void main(String[] args)
        {
        Scanner s = new Scanner(System.in);//make object of scanner

        System.out.println("Enter size of each room (in squared feet): ");
        double RoomSize= s.nextDouble();
        //double RoomSize = getDouble("Enter size of each room (in squared feet): "); //old code

        System.out.println("Enter price of paint per gallon: ");
        double PaintCost = s.nextDouble();
        //double PaintCost = getDouble("Enter price of paint per gallon: "); //old code

        System.out.println("Enter number of rooms to paint: ");
        double RoomCount = s.nextDouble();
        //double RoomCount = getDouble("Enter number of rooms to paint: "); //old code
        s.close();
        double RoomCostUnit = (RoomSize * RoomCount) / SizeToCost;


        double PaintCountTotal = PaintToCost * RoomCostUnit;

        double LabourCountTotal = LabourToCost * RoomCostUnit;


        double PaintCostTotal = PaintCountTotal * PaintCost;


        double LabourCostTotal = LabourCountTotal * LabourCostPerHour;


        double JobCostTotal = PaintCostTotal + LabourCostTotal;


        double DisplayPaintCountTotal = (double)((int)(PaintCountTotal * 100) / 100.0);
        double DisplayLabourCountTotal = (double)((int)(LabourCountTotal * 100) / 100.0);
        double DisplayPaintCostTotal = (double)((int)(PaintCostTotal * 100) / 100.0);
        double DisplayLabourCostTotal = (double)((int)(LabourCostTotal * 100) / 100.0);
        double DisplayJobCostTotal = (double)((int)(JobCostTotal * 100) / 100.0);

        String Message = "The number of gallons of paint required = " + DisplayPaintCountTotal + "\n" +
        "The hours of labor required = " + DisplayLabourCountTotal + "\n" +
        "The cost of the paint = " + DisplayPaintCostTotal + "\n" +
        "The labor charges = " + DisplayLabourCostTotal + "\n" +
        "The total cost of the paint job = " + DisplayJobCostTotal + "\n";
        //JOptionPane.showMessageDialog(null, Message); //old code
        System.out.println(Message);
        }

//      private static double getDouble (String Prompt)  //old code
//      {
//
//      String UserInput = JOptionPane.showInputDialog(Prompt);
//      return ((double)Double.parseDouble(UserInput));
//      }
        }