Please explain why Output is "Found" in the first question but it's "classCastException" in the second question.

2.14 Does this code compile? If it does, what is its output? class A boolean isSuper) 1 return true; public class B extends A boolean isSuper) 1 return false; public static void main(String[] args) i A a1- new A C); A a2 = new B(); B b = null; if ! al . isSuper() ) b (B) al ; if (! a2.isSuperO) b - (B)a2 System.out.println("FounduB"); Found B 2.15 Does this code compile? If it does, what is its output? class A boolean isSuperO) t return true; h public class B extends A boolean isSuper) I return false; h public static void main(String [] args) [ A a1 - new A C); A a2 = new B(); if(al.isSuper C)) b - (B)a1; if (a2.isSuper C)) b - (B) a2; System. out.println(" FounduB"); ClassCastException