Java Hw Carpet calulator. Hi need help with hw assignment. create a class named

Question

Java Hw Carpet calulator. Hi need help with hw assignment. create a class named RoomDimension that has two fields: one for the length of the room and one for the width. The RoomDimension class should have a method that returns the area of the room. The next two parts I have done. Just need this prgm. Here is what I have so far:

import java.util.Scanner;

/**
This program demonstrates a solution to the
Carpet Calculator programming challenge.
*/

public class RoomDemo
{
public static void main(String[] args)
{
final double CARPET_PRICE = 8.0; // Price per square foot
double length; // To input room length
double width; // To input room width
RoomDimension dimensions; // To hold room dimensions
RoomCarpet room; // To determine cost

// Create a Scanner object for keyboard input.
Scanner keyboard = new Scanner(System.in);
  
// Display intro.
System.out.println("This program will display price to " +
"carpet a room. You must input the " +
"room's dimensions in feet.");
  
// Get the length of the room.
System.out.print("Enter the length first: ");
length = keyboard.nextDouble();
  
// Get the width of the room.
System.out.print("Now enter the width: ");
width = keyboard.nextDouble();
  
// Create RoomDimension and RoomCarpet objects.
dimensions = new RoomDimension(length, width);
room = new RoomCarpet(dimensions, CARPET_PRICE);
  
// Display the dimensions and cost.
System.out.println(room);
}
}

*****************************************AND******************************************************

import java.text.DecimalFormat;

public class RoomCarpet
{
private RoomDimension size;   
private double carpetCost;

public RoomCarpet(RoomDimension dim, double cost)
{
  
size = new RoomDimension(dim.getLength(), dim.getWidth());
  
  
carpetCost = cost;
}


public double getTotalCost()
{
// Return the total cost.
return carpetCost * size.getArea();
}

public String toString()
{
  
DecimalFormat dollar = new DecimalFormat("#,##0.00");
  
  
String str = "Room dimensions: " +
size + " Carpet cost: $" +
dollar.format(getTotalCost());
  
  
return str;
}
}

*****************Thanks****************

Explanation / Answer

Assuming that the room is a rectangle shaped.

public class RoomDimension {

   private double length;
   private double width;

   public RoomDimension(double length, double width) {
       super();
       this.length = length;
       this.width = width;
   }

   public double getLength() {
       return length;
   }

   public void setLength(double length) {
       this.length = length;
   }

   public double getWidth() {
       return width;
   }

   public void setWidth(double width) {
       this.width = width;
   }

   public double getArea() {
       return length*width;
   }

@Override
   public String toString() {
       return "length=" + length + ", width=" + width;
   }

}

Also, Some suggestions in your code:

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