Question

Mick’s Wicks makes candles in various sizes. Create a class for the business named Candle that contains the following data fields: color - of type String height - of type int price - of type double Create get methods for all three fields. Create set methods for color and height, but not for price. Instead, when height is set, determine the price as $2 per inch. Create a child class named ScentedCandle that contains an additional data field named scent (of type String) and methods to get and set it. In the child class, override the parent’s setHeight() method to set the price of a ScentedCandle object at $3 per inch.

Answer 1

Java Program:

package democandles;

class Candle {
  
//Member variables
protected String color;
protected int height;
protected double price;
  
//Getter methods
public String getColor() {
return color;
}
public int getHeight() {
return height;
}
public double getPrice() {
return price;
}
  
//Setter methods
public void setColor(String color) {
this.color = color;
}
public void setHeight(int height) {
this.height = height;
  
//Updating price as $2 per inch
this.price = this.height * 2;
}
}

//Child Class
class ScentedCandle extends Candle {
  
//Adding additional data field named scent (of type String)
private String scent;
  
//Getter and Setter methods
public String getScent() {
return scent;
}

public void setScent(String scent) {
this.scent = scent;
}
  
//override the parent’s setHeight() method
@Override
public void setHeight(int height) {
this.height = height;
  
//Updating price as $3 per inch
this.price = this.height * 3;
}
}

//Main class
public class DemoCandles {

public static void main(String[] args) {
  
//Creating a candle object
Candle candleObj = new Candle();
  
//Assigning color, height
candleObj.setColor("Blue");
candleObj.setHeight(10);
  
//Printing values
System.out.println("\nCandle Values: \n Color: " + candleObj.getColor() + "\n Height: " + candleObj.getHeight() + " inches. \n Price: $" + candleObj.getPrice());
  
//Creatign a Scented Candle object
ScentedCandle scandleObj = new ScentedCandle();
  
//Assigning color, height
scandleObj.setColor("Green");
scandleObj.setHeight(12);
  
//Printing values
System.out.println("\nScented Candle Values: \n Color: " + scandleObj.getColor() + "\n Height: " + scandleObj.getHeight() + " inches. \n Price: $" + scandleObj.getPrice());
  
}
}

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Sample Run: