Add a class FillInQuestion to the question hierarchy of How To 10.1. An object of this class is constructed with a string that contains the answer, surrounded by _ _, for example, "The inventor of Java was _James Gosling_". The question should be displayed as

The inventor of Java was _____

Complete the following file:

Use the following file:

import java.util.Scanner;

public class QuestionDemo
   public static void main(String[] args)
      Question[] quiz = new Question[2];

      FillInQuestion question0 = new FillInQuestion(
         "_James Gosling_ was the inventor of Java.");
      quiz[0] = question0;

      FillInQuestion question1 = new FillInQuestion(
         "The first U.S. president was _George Washington_");
      quiz[1] = question1;

      Scanner in = new Scanner(;
      for (Question q : quiz)
         System.out.println("Your answer: ");
         String response = in.nextLine();