Assume that a gallon of paint covers about 350 square feet of wall space. Create an application with a main() method that prompts the user for the length, width, and
height of a rectangular room. Pass these three values to a method that does the following:
- Calculates the wall area of a room
- Passes the calculated wall area to another method that calculates and returns the
number of gallons of paint needed.
- Displays the number of gallons needed.
- Computes the price based on a paint price of $32 per gallon, assuming that the painter
can buy any fraction of a gallon of paint at the same price as a whole gallon.
- Returns the price to the main() method
The main() method displays the final price. For example, the cost to paint a 15-by-20-foot
room with 10-foot cielings is $64 dollars. Save as PaintClculator. java
**Note: I can prompt the user, but I can't get a return from my code.
import java. util. Scanner;
public class PaintCalculator {
public static void main(String [] args)
{
Scanner keyboard = new Scanner(System. in);
double wallArea;
double height;
double length;
double width;
double price;
double WallArea;
double paintQuantity;
//Prompts user for the dimensions of the room
System. out. print("Please enter the height of the room: ");
height = keyboard. nextDouble();
System. out. print("Please enter the length of the room: ");
length = keyboard. nextDouble();
System. out. print("Please enter the width of the room: ");
width = keyboard. nextDouble();
WallAreaMethod(height, length, width);
}
//Calulates the area of the wall in a room
public static double WallAreaMethod(double height, double length, double width)
{
double wallArea;
wallArea = length * height * width * height;
return wallArea;
}
//Computes the quanity of paint needed
public static double paintFormula(double wallAreaMethod, double price, double height, double length, double width)
{
double wallArea;
double paintQuantity;
paintQuantity = wallAreaMethod * 2 / 350;
System. out. println("For a room of height " + height + "feet, length " +
length + " feet, and width " + width + " feet you need to purchase "
+ paintQuantity + " gallons of paint.");
System. out. println("The price will be $" + price + ".");
price = paintQuantity * 32.0;
return price;
}
}