Question

[CODE] Write a class encapsulating the concept of a house, assuming a house has the following attributes: value (in dollars), a city location, and number of bedrooms.

Your class name should be “House” and your code should be in a file called “House.java”. You will need to create this file. In this class, include:

• Private instance variables for the previously-mentioned attributes

• A default constructor

• An overloaded constructor

• Accessor and mutator methods (i.e., get and set methods)

• The toString method

• The equals method
  Your default constructor should typically initialize the instance variables to some default values that you feel are appropriate (let’s just go with a $100,000, 2-bedroom home in Azusa). The overloaded constructor should pass in values for value, city location and number of bedrooms which are used to initialize the class’ instance variables.

  The as your client class (House_Client.java) has been provided to test all the methods in your class. So, you would want to test the default and overloaded constructors, as well as accessors, mutators, toString and equals methods. Since this is the first time you’ve ever thought about creating a client to test a user-defined class, it is provided below.

House_Client:

import java.text.DecimalFormat;

public class House_Client {

public static void main(String[] args) {

// TODO Auto-generated method stub

// Decimal format....do not need cents b/c negligible

// compared to hundreds of thousands of dollars

DecimalFormat df = new DecimalFormat("$#,##0");

// Testing default constructor and toString()

House defaultHouse = new House();

System.out.println(defaultHouse.toString());

System.out.println(); // Spacing

// Testing overloaded constructor and toString()

House bigHouse = new House(1400000, "Pasadena", 6);

System.out.println(bigHouse.toString());

// Tests the getters

System.out.println("Before modifying big house using setters:");

System.out.println("Big house value: " + df.format(bigHouse.getValue()));

System.out.println("Big house location: " + bigHouse.getLocation());

System.out.println("Big house bedrooms: " + bigHouse.getNumBedrooms());

// Apply the setters....will test their functionality

// by calling getters again next...

bigHouse.setValue(3200000);

bigHouse.setLocation("Hollywood");

bigHouse.setNumBedrooms(14);

System.out.println(); // Spacing

// Tests that the setters did their jobs

System.out.println("After modifying big house using setters:");

System.out.println("Big house value: " + df.format(bigHouse.getValue()));

System.out.println("Big house location: " + bigHouse.getLocation());

System.out.println("Big house bedrooms: " + bigHouse.getNumBedrooms());

System.out.println(); // Spacing

// Test the equals() method on case that should return false

System.out.print("The default house and big house ");

if (defaultHouse.equals(bigHouse))

System.out.println("are the SAME houses!");

else

System.out.println("are DIFFERENT houses!");

System.out.println(); // Spacing

// Test the equals() method on case that should return true

House identicalBigHouse = new House(3200000, "Hollywood", 14);

System.out.print("The identical big house and big house ");

if (identicalBigHouse.equals(bigHouse))

System.out.println("are the SAME houses!");

else

System.out.println("are DIFFERENT houses!");

}

}

Expected Output:

This house is in Azusa, is worth $100,000 and has 2 bedrooms.

This house is in Pasadena, is worth $1,400,000 and has 6 bedrooms. Before modifying big house using setters:
Big house value: $1,400,000
Big house location: Pasadena

Big house bedrooms: 6

After modifying big house using setters: Big house value: $3,200,000
Big house location: Hollywood
Big house bedrooms: 14

The default house and big house are DIFFERENT houses!
The identical big house and big house are the SAME houses!

Answer 1

House.java

import java.text.DecimalFormat;

public class House {
   //declaring private variavles
   private int value;
   private String location;
   private int numBedrooms;
  
   //getter and setters for each variavle
   public int getValue() {
       return value;
   }

   public void setValue(int value) {
       this.value = value;
   }

   public String getLocation() {
       return location;
   }

   public void setLocation(String location) {
       this.location = location;
   }

   public int getNumBedrooms() {
       return numBedrooms;
   }

   public void setNumBedrooms(int numBedrooms) {
       this.numBedrooms = numBedrooms;
   }
  
  
   //toString method
   public String toString(){
       DecimalFormat df = new DecimalFormat("$#,##0");
       String s = "This house is in " + getLocation() +", is worth " + df.format(getValue()) +" and"
               + " has " + getNumBedrooms() +" bedrooms.";
       return s;
              
   }
  
   //equals method that checks if two hpuses are equal
   public boolean equals(House h)
   {
       if(this.getLocation().equals(h.getLocation()) && this.getNumBedrooms() == h.getNumBedrooms() && this.getValue() == h.getValue())
           return true;
       return false;
   }

  
   //default constructor
   House()
   {
       setValue(100000);
       setLocation("Azusa");
       setNumBedrooms(2);
   }
   //parameterised constructor
   House(int value, String location, int numBedrooms)
   {
       setValue(value);
       setLocation(location);
       setNumBedrooms(numBedrooms);
   }
}