Object Oriented Programming (OOPs)

Question : 34 of 72

Marks: +1, -0

Given:

1. public class Pizza { 
2.  ArrayList toppings; 
3.  public final void addTopping(String topping) { 
4.   toppings.add(topping); 
5.  }  
7.  public void removeTopping(String topping) { 
8.   toppings.remove(topping); 
9.  } 
10.} 
 
And: 
 
class PepperoniPizza extends Pizza { 
 public void addTopping(String topping) { 
  System.out.prin11n("Cannot add Toppings'"); 
 }  
  public void removeTopping(String topping){ 
  System out.printIn("Cannot remove Pepperoni"); 
 } 
} 
 
And: 
 
  Pizza pizza = new PepperoniPizza(); 
  pizza.addTopping("Mushrooms"); 
  pizza.removeTopping("Pepperon i");

Compilation fails.
Cannot add Toppings
The code runs with no output.
A NullPointerException is thrown in Line 4.

Validate

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