And Part 2 of the question: Consider the following object-oriented code: abstrac

Question

And Part 2 of the question:

Consider the following object-oriented code: abstract public class Number { abstract public Number add(Number n); public class Complex extends Number [ public Complex(double r, double i) rer im-i public Complex add(Number n) [ Complex that (Complex) n; return new Complex(this.re+that.re, this.im+that.im); private double re; private double im; public class Real extends Number public Real(double v) [ val-v; public Real add(Number n) [ Real that (Real) n return new Real(this.val+that.val); private double val;

Explanation / Answer

Hi I have answered Q1.

Ans: A ClassCasteException.

Becasue We are calling "add" method of Complex class and passing Real object.

So when we do : Complex that = (Compex)n;

then it will throw the exception.

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