Question 1.

Assume the following classes are each defined in their own java files and compile public class A { public void display() { 

System.out.println("A's display"); 

} } public class B extends A { public void display() { System.out.println("B's display"); } } public class C extends A { public void display() { System.out.println("C's display"); } } public class D { public static void main(String[] args) { A a = new C(); System.out.print("A" + (a instanceof A) + " B " + (a instanceof B) + " C " + (a instanceof C) + " Obj " + (a instanceof Object)); } } 

What is output when I run D?

Question 2.

Using the MyStack class, what will be the result of running D? public class D { public static void main(String[] args) { MyStack mstack = new MyStack(); Object top = mstack.pop(); System.out.print(top); } }