Question

Code a Java program to create and use OO classes. Comment your code throughout. Create a Super class named Home Properties address SF (this is the number of Square feet) value (this is the dollar value of the home) Methods Set and get methods for all properties calcValue() - calculate the value as sf * 400 displayCondo() - displays all properties of a condo Create a sub class named Condo Properties HOAfee (home owners association fee) Methods Set and get methods Create 50 Condo objects in an array (use a loop) The addresses are 101 thru 110 Hardscrabble Drive The SF are between 850-1250. Randomly assign this Use the calcValue() method to fill the values The HOAfees are all $350 After you have filled the array, output the contents of the array to the console. Create a Main() method to execute your logic. Don’t be too concerned with minor syntax errors. Draw a line in your code (---------------------) to separate your classes Home() Condo() and Main()

Answer 1

Program Code Screenshot :

1 2 import java.util. Random; // Home class 3 of class Home{ //Instance variables 5 String address; double SF; 7 double value; 4. 6 00 9 19 //Getter and Setter public String getAddress() { return address; 11 12 هه 13 14 public void setAddress(String address) { this.address = address; 15 16 مہه 17 18 19 public double getsF() { return SF; } 20 21 22 public void setsF(double SF) { SF; 23 this.SF = 24 نہا 25 26 public double getValue() { return value; 27 28 نہا 29 30 public void setValue(double value) { this.value = value; 31 32 } 33 34 35 //Calculate value method void calcValue(){ value = SF*400; 36 37 هه 38 39 40 41 //Method to display condo void displayCondo (){ System.out.println("Address : "+address); System.out.println("SF : "+SF); System.out.println("Value : "+value); 42 43 44 } 45

46 47 48 //Condo class class Condo extends Home{ //Instance variables double HoAfee; 49 59 51 52 53 //Getter and Setter public double getHoafee() { return HOAfee; 54 ܢ 55 56 57 public void setHoAfee (double HoAfee) { this.HoAfee = HOAfee; 58 59 } 60 61 62 63 64 65 66 class Main{ public static void main(String[] args) { Random r = new Random(); Condo condo[] = new Condo[50]; for(int i=0;i<condo.length;i++){ condo[i] = new Condo(); condo[i].setAddress("101 thru 110 Hardscrabble Drive"); condo[i].SF = 850+r.nextInt(401); condo[i].calcValue(); condo[i].HoAfee = 350; 67 68 69 70 71 72 } 73 for(int i=0;i<condo.length; i++){ condo[i].displayCondo(); 74 75 نہا 76 } 77 }

Sample Output :

Run: + Main X "C:\Program Files\Java\jdk-13\bin\java.exe" Address : 101 thru 110 Hardscrabble Drive SF : 1034.0 Value : 413600.0 Address : 101 thru 110 Hardscrabble Drive SF 1098.0 Value : 439200.0 Address : 101 thru 110 Hardscrabble Drive SF : 891.0 Value : 356400.0 Address : 101 thru 110 Hardscrabble Drive SF : 1014.0 Value : 405600.0 Address : 101 thru 110 Hardscrabble Drive SF : 995.0 Value : 398000.0 Address : 101 thru 110 Hardscrabble Drive SF : 969.0 Value : 387600.0 Address : 101 thru 110 Hardscrabble Drive SF : 1110.0 Value : 444000.0 Address : 101 thru 110 Hardscrabble Drive SF : 1140.0 Value : 456000.0 Address : 101 thru 110 Hardscrabble Drive

Program Code to Copy

import java.util.Random;
//Home class
class Home{
    //Instance variables
    String address;
    double SF;
    double value;

    //Getter and Setter
    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public double getSF() {
        return SF;
    }

    public void setSF(double SF) {
        this.SF = SF;
    }

    public double getValue() {
        return value;
    }

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

    //Calculate value method
    void calcValue(){
        value = SF*400;
    }

    //Method to display condo
    void displayCondo(){
        System.out.println("Address : "+address);
        System.out.println("SF : "+SF);
        System.out.println("Value : "+value);
    }
}

//Condo class
class Condo extends Home{
    //Instance variables
    double HOAfee;

    //Getter and Setter
    public double getHOAfee() {
        return HOAfee;
    }

    public void setHOAfee(double HOAfee) {
        this.HOAfee = HOAfee;
    }
}

class Main{
    public static void main(String[] args) {
        Random r = new Random();
        Condo condo[] = new Condo[50];
        for(int i=0;i<condo.length;i++){
            condo[i] = new Condo();
            condo[i].setAddress("101 thru 110 Hardscrabble Drive");
            condo[i].SF = 850+r.nextInt(401);
            condo[i].calcValue();
            condo[i].HOAfee = 350;
        }
        for(int i=0;i<condo.length;i++){
            condo[i].displayCondo();
        }
    }
}