A Modified MiniQuiz Class Files Question.java, Complexity.java, and MiniQuiz.jav

Question

A Modified MiniQuiz Class

Files Question.java, Complexity.java, and MiniQuiz.java contain the classes. These classes

demonstrate the use of the Complexity interface; class Question implements the interface, and

class MiniQuiz creates two Question objects and uses them to give the user a short quiz.

Save these three files to your directory and study the code in MiniQuiz.java. Notice that after the Question objects are created, almost exactly the same code appears twice, once to ask and grade the first question, and again to ask and grade the second question. Another approach is to write a method askQuestion that takes a Question object and does all the work of asking the user the question, getting the user

Explanation / Answer

import javax.swing.*;
import java.io.*;

public class Quiz
{
       //Initializaions and Instantiations
       static lnumber cin = new lnumber(new InputStreamReader(System.in));

//-------------------------------------------------------------------------------

       public static void main(String[] args)
       {
              int scr = 0;
              final int noQuestions = 5;
  
           System.out.println(" Quiz 1.0 ");
  
              //Store questions and answers in 2 dimensional array
              String[][] QandA = {
                                  {"Who is Scooby Doo's best friend?","shaggy"},
                                  {"Who developed relativity?","einstein"},
                                  {"When year did the twin towers fall?","2001"},
                                  {"Who was the first president?","washington"},
                                  {"What is the meaning of life?","42"} };
                                
             String[] Answers = new String[noQuestions];

            //loop through each string in the array and compare it to answers
            for(int x = 0; x < noQuestions; x++)
            {
                 System.out.print(" " + (x+1) + ". " + QandA[x][0] + "   ");
               
                 try { Answers[x] = cin.readLine(); }
                 catch (IOException e) { System.err.println("Error."); }
    
                 Answers[x].toLowerCase();
               
                 if(QandA[x][1].equals(Answers[x]))
                 {
                      scr++;
                 }//close if

                 System.out.print(" ");

            }//close outer loop                               
  
            System.out.println(" You got " + scr + " of "
                               + noQuestions + " right! ");

            System.exit(0);
          
       }//close main() function
     
//-------------------------------------------------------------------------------

}//close Quiz class

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