Solution Review: Implement and Override Method

// Base Class
class Shape {
  // Private Data Members
  private double area;
  
  public Shape() { // Default Constructor
  	area = 0;
  }
  // Getter Function
  public double getArea() {
    return area;
  }
  
}
// Derived Class
class Circle extends Shape { 
  
  private double radius;
  
  public Circle(double radius) { // Constructor
    this.radius = radius;
  }
  
  // Overridden Method the getArea() which returns the area of Circle
  public double getArea() {
    return (radius*radius) * 3.14; 
  }
  
}
class Demo {
  
 public static void main(String args[]) {
   Shape circle = new Circle(2);
   System.out.println(circle.getArea());
  }
  
}