The following figure shows a UML diagram that aggregates the RoomCarpet class fr

Question

The following figure shows a UML diagram that aggregates the RoomCarpet class from the RoomDimension class.

*I am using JGrasp so please make sure it is compatible

*Please comment throughout code

*FULL QUESTION IN IMAGES BELOW

Exercise 1: The following figure shows a UML diagram that aggregates the RoomCarpet class from the Room Dimension class. Room Carpet room: RoomDimension carpetCost: double total Cost: double Room Carpet (RoomDimension r, double cost) Cost double getTotal tostring String costs More (RoomCarpet other) boolean Room Dimension length double width: double Room Dimension (double l, double w) getLength double getWidth double toString String

Explanation / Answer

//RoomDimension.java
public class RoomDimension {
  
   private double length;
   private double width;
   //Constructor that takes lengha and width
   public RoomDimension(double l,double w) {
       length=l;
       width=w;
   }
  
   //Returns length of room
   public double getLength(){
       return length;
   }
  
   //Returns width of room
   public double getWidth(){
       return width;
   }
  
   //Returns string representation of room
   public String toString() {      
       return String.format("Room with Lenght : %5.2f and width : %5.2f",length,width);
   }

}

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//RoomCarpet.java
public class RoomCarpet {
  
   //Declare RoomDimension variable
   private RoomDimension room;
   //instance variable declaration
   private double carpetCost;
   private double totalCost;
  
   //Constructor takes RoomDimension and cost
   public RoomCarpet(RoomDimension r,double cost) {
       room=r;
       carpetCost=cost;
   }
  
   //Returns total cost
   public double getTotalCost(){
       double totalCost=0;      
       totalCost=room.getLength()*room.getWidth()*carpetCost;
       return totalCost;      
   }
  
   /*Method costsMore that takes RoomCarpet and returns
   true if the total cost is more than the total cost
   of RoomCarpet*/
   public boolean costsMore(RoomCarpet other){      
       return getTotalCost()>other.getTotalCost();
      
   }
  
   public String toString() {      
       return room.toString()+
               String.format("Carpet Cost($per sq.ft):%3.1f Total Cost($):%4.2f",carpetCost,getTotalCost());              
   }
  

}

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/**
* The java program RoomCarpetDemo that prompts user
* to ener length and width of a room and cost of
* two rooms.Then finds the cost of carpet and
* prints which room costs more to console
* */
//RoomCarpetDemo.java
import java.util.Scanner;
public class RoomCarpetDemo {  
   public static void main(String[] args) {
      
       double length1,width1;
       double length2,width2;
      
       double cost1,cost2;
       //create an instance of Scanner class
       Scanner s=new Scanner(System.in);
       System.out.println("Enter the dimensions of the first room: ");
       length1=s.nextDouble();
       width1=s.nextDouble();
       System.out.println("Enter the cost per square foot of carpet: ");
       cost1=s.nextDouble();
       System.out.println("Enter the dimensions of the second room : ");
       length2=s.nextDouble();
       width2=s.nextDouble();
       System.out.println("Enter the cost per square foot of carpet : ");
       cost2=s.nextDouble();
      
       //Create two RoomCarpet objects with RoomDimension and cost
       RoomCarpet r1=new RoomCarpet(new RoomDimension(length1, width1), cost1);
       RoomCarpet r2=new RoomCarpet(new RoomDimension(length2, width2), cost2);
       //calling costsMore method
       boolean result=r1.costsMore(r2);
       if(result)
           System.out.println(r1.toString()+" costs more than "+r2.toString());      
       else
           System.out.println(r1.toString()+" and"+r2.toString()+" cost the same.");
      
   }

}

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sample output:
Enter the dimensions of the first room:
10.0 10.0
Enter the cost per square foot of carpet:
5.0
Enter the dimensions of the second room :
10.0 5.0
Enter the cost per square foot of carpet :
10.0
Room with Lenght : 10.00 and width : 10.00Carpet Cost($per sq.ft):5.0 Total Cost($):500.00
andRoom with Lenght : 10.00 and width : 5.00Carpet Cost($per sq.ft):10.0 Total Cost($):500.00 cost the same.

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