Exam 1z0-808 topic 1 question 183 discussion

D is the good answer

It's not B because with Bird B = new Bird() and peacock p = (peacock) B; it's as if this becomes peacock p = new bird(); which is wrong

only D

Tested. Answer is - D. Bird b = new Peacock (); Peacock p = (Peacock) b;

I tested it. For B option is taken cast exception. D option worked correctly..

Tested. Answer is D. To test: class Bird { public void fly() { System.out.print("Fly."); } } class Peacock extends Bird { public void dance() { System.out.print("Dance."); } } public class Test { public static void main(String[] args) { Bird b = new Peacock (); Peacock p = (Peacock) b; p.fly(); p.dance(); } }

Answer is D. class Bird{ public void fly() { System.out.println("fly"); } } public class Peacock extends Bird { public void dance() { System.out.println("dance"); } public static void main(String[] args) { Bird b= new Peacock(); Peacock p= (Peacock) b; // Bird b= new Bird(); // Peacock p= (Peacock) b; // ClassCastException p.fly(); p.dance(); } }

The correct answer is the letter B, you need to create an object B and then do a casting for it, making the same be able to access the method of the child class.

Correct answer is D. For option B there is ClassCastException as class Bird cannot be casted to class Peacock