Explanation of Solution
Program:
PaintCalculator.java
//import the required packages
import java.util.Scanner;
//define the class PaintCalculator
public class PaintCalculator
{
//declare the require constants
private static int AREA_PER_GALLON = 350;
private static double PRICE_PER_GALLON = 32;
//method that calculate the area, gallons of required paint and the total price
public static double calculate(double length, double height, double width)
{
//calculate the area
double area = length * height * 2 + width * height * 2;
//call the method calculateGallons()
double gallonsRequired = calculateGallons(area);
//print the gallonsRequired
System.out.println("Require Gallons of paint: " + gallonsRequired);
//calculate the price
double price = gallonsRequired * PRICE_PER_GALLON;
//return price
return price;
}
//define the method calculateGallons()
public static double calculateGallons(double area)
{
//returns the number of gallons for the given area
return area/AREA_PER_GALLON;
}
//define the main method
public static void main(String[] args)
{
//declare the required variables
int length, height, width;
//create the object for Scanner class
Scanner inputScanner = new Scanner(System.in);
//prompt the user to enter length of room
System.out.print("Enter Length of the room: ");
//read the length from the user
length = inputScanner.nextInt();
//prompt the user to enter width of room
System.out.print("Enter Width of the room: ");
//read the width from the user
width = inputScanner.nextInt();
//prompt the user to ente Height of room
System...
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Chapter 3 Solutions
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