Paint Job Estimator v2

import java.util.Scanner;

public class Main {

    final static double LABOR_PRICE_PER_HOUR = 18.00;

    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);

        System.out.println("Wprowadź liczbe pokojów: ");
        int rooms = input.nextInt();
        System.out.println("Podaj cenę farby");
        double paintPrice = input.nextDouble();
        System.out.println("Podaj powierzchnię do pomalowania");
        double surface = 0;

        for (int i = 0; i < rooms; i++)
        {
            System.out.println("Powierzchnia pokoju " + (i + 1));
            surface += input.nextDouble();
        }

        System.out.printf("Potrzebne litry: %.2fl\n", getPaintRequired(surface));
        System.out.printf("Potrzebne godziny pracy: %.2fh\n", getLaborHoursRequired(surface));
        System.out.printf("Koszt farby %.2fzł\n", getPaintCost(paintPrice, surface));
        System.out.printf("Koszt robocizny: %.2fzł\n", getLaborCost(surface));
        System.out.printf("Lączny koszt malowania: %.2fzł\n", getTotalCost(surface, paintPrice));
    }

    public static double getPaintRequired(double surface)
    {
        return surface / 10 * 1.5;
    }

    public static double getLaborHoursRequired(double surface)
    {
        return surface / 10 * 8;
    }

    public static double getPaintCost(double paintPrice, double surface)
    {
        return paintPrice * getPaintRequired(surface);
    }

    public static double getLaborCost(double surface)
    {
        return LABOR_PRICE_PER_HOUR * getLaborHoursRequired(surface);
    }

    public static double getTotalCost(double surface, double paintPrice)
    {
        return getLaborCost(surface) + getPaintCost(paintPrice, surface);
    }
}