Java inheritance downcast ClassCastException

Question

given the following code, I have a question:

class A{}
class B extends A {}
class C extends B{}

public class Test {
    public static void main(String[] args) {         


        

Answer 1

Downcasts are illegal. An A is not a B and therefore you can't cast it to be one. You can cast B to be A, but not the other way round.