¿Qué ocurre?

class A {}
class B extends A {}
public class Main {
public static void main(String[] args){
A a = new A();
B b = (B)a;
}
}

Question

¿Qué ocurre? 
 
                 class A {}
        class B extends A {}
        public class Main {
            public static void main(String[] args){
                A a = new A();
                B b = (B)a;
            }
        }

Answer

null

Answer

Error de compilación

Answer

Compila sin problema y funciona

Answer

ClassCastException en tiempo de ejecución

Crowdly

¿Qué ocurre? class A {} class B extends A {} ...

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