Design a class named Fan (Fan.java) to represent a fan. The class contains: An i

Question

Design a class named Fan (Fan.java) to represent a fan. The class contains: An int field named speed that specifies the speed of the fan. A boolean field named fanStatus that specifies whether the fan is on (default false). A double field named radius that specifies the radius of the fan (default 5). A string field named color that specifies the color of the fan (default blue). A no-arg (default) constructor that creates a default fan. A constructor that creates a fan with four parameters: speed, fanStatus, radius, and color. A method named toString() that returns a string description for the fan. The method returns the fan speed, color, radius, and fan status (either on or off) in one combined string. Write a TestFan program that asks the user to enter the fan speed, radius, fan status, and color. The program creates a fan object by using the constructor with four parameters. Then it should display the fan description by invoking their toString() method.

Explanation / Answer

Fan.java

public class Fan {

   // Attributes of Fan Class
   private int speed;
   private boolean fanStatus = false;
   private double radius = 5;
   String color = "blue";

   // default Constructor
   public Fan() {
   }

   // Parameterized Constructor
   public Fan(int speed, boolean fanStatus, double radius, String color) {
       this.speed = speed;
       this.fanStatus = fanStatus;
       this.radius = radius;
       this.color = color;
   }

   // Setters and Getters

   public int getSpeed() {
       return speed;
   }

   public void setSpeed(int speed) {
       this.speed = speed;
   }

   public boolean isFanStatus() {
       return fanStatus;
   }

   public void setFanStatus(boolean fanStatus) {
       this.fanStatus = fanStatus;
   }

   public double getRadius() {
       return radius;
   }

   public void setRadius(double radius) {
       this.radius = radius;
   }

   public String getColor() {
       return color;
   }

   public void setColor(String color) {
       this.color = color;
   }

   // toString method used to return String data of Fan
   @Override
   public String toString() {
       String onOrOff;
       if (isFanStatus())
          ;
       else
          ;

       if (isFanStatus()) { // Checking Whether Fan is on/off
           return "A " + this.getRadius() + " inch " + this.getColor()+ " fan at a speed of " + this.getSpeed();
       } else {
           return "A " + this.radius + " inch " + this.getColor()+ " fan; fan is " + onOrOff;
       }
   }

}

___________________

TestFan.java

import java.util.Scanner;

public class TestFan {

   public static void main(String[] args) {

       // Declaring variables
       int speed;
       boolean fanStatus;
       double radius;
       String color;

       // Scanner object is used to get the inputs entered by the user
       Scanner sc = new Scanner(System.in);

       // Getting the inputs entered by the user
       System.out.print("Enter the speed of the fan :");
       speed = sc.nextInt();

       System.out.print("Enter the Fan Status :");
       fanStatus = sc.nextBoolean();

       System.out.print("Enter the radius of the fan :");
       radius = sc.nextDouble();

       System.out.print("Enter the color of the fan :");
       color = sc.next();

       // Creating the Fan class object by passing the user inputs as arguments
       Fan f = new Fan(speed, fanStatus, radius, color);

       // Displaying the Fan class object Info
       System.out.println(f.toString());

   }

}

___________________

Output#1:

Enter the speed of the fan :3
Enter the Fan Status :true
Enter the radius of the fan :6.5
Enter the color of the fan :green
A 6.5 inch green fan at a speed of 3

_____________

Output#2:

Enter the speed of the fan :2
Enter the Fan Status :false
Enter the radius of the fan :4.0
Enter the color of the fan :orange
A 4.0 inch orange fan; fan is off

_____________Thank You

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