QUESTION 26

QUESTION 26 
Given: 
 
class Pizza {
     java.util.ArrayList toppings; 
 
    public final void addTopping(String topping) {
         toppings.add(topping);
     }
     public void removeTopping(String topping) {
         toppings.remove(topping);
     }
} 
 
public class PepperoniPizza extends Pizza {
     public void addTopping(String topping) {
         System.out.println("Cannot add Toppings");
     } 
 
    public static void main(String[] args) {
         Pizza pizza = new PepperoniPizza();
         pizza.addTopping("Mushrooms");
         pizza.removeTopping("Peperoni");
     }
 } 
 
What is the result? 
 
A. Compilation fails. 
B. Cannot add Toppings 
C. The code runs with no output. 
D. A NullPointerException is thrown in Line 4. 
Solution : A 

---

plus imformation

Main.java:13: addTopping(java.lang.String) in PepperoniPizza cannot override addTopping(java.lang.String) in Pizza;

overridden method is final

public void addTopping(String topping) {

                 ^ Note: Main.java uses unchecked or unsafe operations. Note: 

Recompile with -Xlint:unchecked for details. 

1 error