Homework SourseJAVA Question Carpet Calculator The Westfield Carpet Company
JAVA
Question: Carpet Calculator
The Westfield Carpet Company has asked you to write an application that calculates the price of carpeting for rectangular rooms. To calculate the price, you multiply the area of the floor (width times length) by the price per square foot of carpet. For example, the area of the floor that is 12 feet long and 10 feet wide is 120 square foot. To cover that floor with carpet that costs $8 per square foot would cost $960.
First you should create a class named RoomDimension that has two fields: one for the length of the room and one for the width of the room. The RoomDimension class should have a method that returns the area of the room.
Next you should create a RoomCarpet class that has a RoomDimension object as a field. It should also have a field for the cost of the carpet per square foot. The RoomCarpet class should have a method that calculates and returns the cost of the carpet.
Once you have the two classes, write a test program to ask the user to enter the dimensions of a room and the price per square foot of the desired carpeting. Then display the total cost of the carpet.
RoomCarpet
-size:RoomDimension
-carpetCost: double
+RoomCarpet(dim: RoomDimension, cost: double):
+RoomCarpet(rc: RoomCarpet)
+getTotalCost(): double
+getSize(): RoomDimension
+getCarpetCost(): double
+toString():String
RoomDimension
-length: double
-width: double
+RoomDimension(len: double, wid: double)
+RoomDimension(rd: RoomDimension)
+getArea(): double
+toString(): String
Write three java files:
1. RoomDimension.java: defines the RoomDimension class
2. RoomCarpet.java: defines the RoomCarpet class, which has a RoomDimension object as a data field
3. the test program
Solution
import java.text.DecimalFormat;
public class RoomCarpet {
private RoomDimension rmSize;
private double pricePerSqFt;
//default constructor
public RoomCarpet()
{
this.rmSize = new RoomDimension();
this.pricePerSqFt = 0.00;
}
//parameters constructor
public RoomCarpet(RoomDimension rmSize, double pricePerSqFt)
{
this.rmSize = new RoomDimension(rmSize.getRmLength(),rmSize.getRmWidth());
this.pricePerSqFt = pricePerSqFt;
}
//accessor methods
public RoomDimension getRmSize()
{
return new RoomDimension(rmSize.getRmLength(),rmSize.getRmWidth());
}
public double getPricePerSqFt()
{
return this.pricePerSqFt;
}
// mutator methods
public void setRmSize(RoomDimension rmSize)
{
this.rmSize = new RoomDimension(rmSize.getRmLength(), rmSize.getRmWidth());
}
public void setPricePerSqFt(double pricePerSqFt)
{
this.pricePerSqFt = pricePerSqFt;
}
// Or price for the room to be carpeted
public double rmTotalCost()
{
return rmSize.getAreaRoom() * pricePerSqFt;
}
//toString method
public String toString()
{
DecimalFormat dollar = new DecimalFormat(\"$#,##0.00\");
String str = this.rmSize.toString() + \" Price per sq. ft : \" +dollar.format(pricePerSqFt) + \" Price to carpet Room: \" + dollar.format(rmTotalCost()) + \'\ \';
return str;
}
public boolean equals(RoomCarpet object2)
{
boolean status;
if ((this.equals(object2)==true)&&(this.pricePerSqFt==object2.pricePerSqFt))
status = true;
else
status = false;
return status;
}
}
public class RoomDimension {
private int rmLength;
private int rmWidth;
//Default constructor
public RoomDimension()
{
rmLength=0;
rmLength=0;
}
// constructor with parameters
public RoomDimension(int rmLength, int rmWidth)
{
this.rmLength=rmLength;
this.rmWidth=rmWidth;
}
// accessor methods
public int getRmLength()
{
return this.rmLength;
}
public int getRmWidth()
{
return this.rmWidth;
}
//mutator methods
public void setRmLength(int rmLength)
{
this.rmLength=rmLength;
}
public void setRmWidth(int rmWidth)
{
this.rmWidth =rmWidth;
}
//area of the room
public int getAreaRoom()
{
return this.rmLength * this.rmWidth;
}
//toString Method
public String toString()
{
String str = \"Room Length: \" + this.rmLength + \" Room Width: \" + this.rmWidth + \" Area of Room: \" + this.getAreaRoom();
return str;
}
public boolean equals(RoomDimension object2)
{
boolean status;
if (this.getAreaRoom() == object2.getAreaRoom())
status = true;
else
status = false;
return status;
}
}
import java.util.Scanner;
public class CarpetPrice {
public static void main(String[] args)
{
RoomDimension rmSize;
RoomCarpet rmCarpet;
Scanner keyboard = new Scanner(System.in);
rmSize=new RoomDimension();
System.out.println(\" Please enter the length of the room: \");
int rmLength= keyboard.nextInt();
rmSize.setRmLength(rmLength);
System.out.println(\"Please enter the rooms width: \");
int rmWidth = keyboard.nextInt();
rmSize.setRmWidth(rmWidth);
System.out.println(\"Please enter the price per sq foot: \");
double pricePerSqFt = keyboard.nextDouble();
rmCarpet = new RoomCarpet(rmSize, pricePerSqFt);
System.out.println(\"\ \"+rmCarpet.toString());
}
