QUESTION 21

QUESTION 21 
Given: 
 
class Animal {
     public String noise() {
         return "peep";
     }
} 
 
class Dog extends Animal {
     public String noise() {
         return "bark";
     }
} 
 
class Cat extends Animal {
     public String noise() {
         return "meow";
     }
} ... 
 
30. Animal animal = new Dog(); 
31. Cat cat = (Cat)animal; 
32. System.out.println(cat.noise()); 
 
What is the result? 
 
A. peep 
B. bark 
C. meow 
D. Compilation fails. 
E. An exception is thrown at runtime. 
 
Solution : E 

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plus imformation 

Exception in thread "main" java.lang.ClassCastException: Dog cannot be cast to Cat

     at ClassTest.main(Main.java:31)