Write a program that administers and grades quizzes.

write a program that administers and grades quizzes. A quiz consists of questions. There are four types of questions: text questions, number questions, choice questions with a single answer, and choice questions with multiple answers. When grading a text question, ignore leading or trailing spaces and letter case. When grading a numeric question, accept a response that is approximately the same as the answer.

A quiz is specified in a text file. Each question starts with a letter indicating the question type (T, N, S, M), followed by a line containing the question text. The next line of a non-choice question contains the answer. Choice questions have a list of choices that is terminated by a blank line. Each choice starts with + (correct) or – (incorrect).

Here is a sample file: 

T Which Java keyword is used to define a subclass? 
extends 

S What is the original name of the Java language? 
– *7 
– C– 
+ Oak 
– Gosling 

M Which of the following types are supertypes of Rectangle? 
– PrintStream 
+ Shape 
+ RectangularShape 
+ Object 
– String 

N What is the square root of 2? 
1.41421356 

Your program should read in a quiz file, prompt the user for responses to all questions, and grade the responses. Follow the design process that was described in this chapter.

Here is a sample program run: 

T Which Java keyword is used to define a subclass? 
input: sub

S What is the original name of the Java language? 
A) *7 
B) C– 
C) Oak 
D) Gosling 

input: C

M Which of the following types are supertypes of Rectangle? 
A) PrintStream 
B) Shape 
C) RectangularShape 
D) Object 
E) String 
Select all that apply:

input: BCD

N What is the square root of 2? 
input: 4

Which Java keyword is used to define a subclass? 

Correct answer: extends 
Your answer: sub 
Your answer was not correct. 

What is the original name of the Java language? 
A) *7 
B) C– 
C) Oak 
D) Gosling 

Correct answer: C 
Your answer: C 
Your answer was correct.

Which of the following types are supertypes of Rectangle? 
A) PrintStream 
B) Shape 
C) RectangularShape 
D) Object 
E) String 

Correct answer: BCD 
Your answer: BCD 
Your answer was correct.

What is the square root of 2? 

Correct answer: 1.41421356 
Your answer: 4 
Your answer was not correct. 

Use the following class as your main class: 

import java.io.FileReader; 
import java.io.IOException; 
import java.util.ArrayList; 
import java.util.Scanner; 

public class QuizRunner { public static void main(String[] args)
throws IOException { Quiz q = new Quiz();
Scanner in = new Scanner(new FileReader(“quiz.txt”));
q.read(in); 
in.close(); 
in = new Scanner(System.in); 
ArrayList questions = q.getQuestions(); 
ArrayList answers = new ArrayList(); 
for (Question qu : questions) 
{ System.out.println(qu.getText()); 
String answer = in.nextLine(); answers.add(answer); } 
boolean[] results = q.checkAnswers(answers); 
for (int i = 0; i < results.length; i++) { System.out.println() ; System.out. println(questions.get(i).getText()); 
System.out.println(“Correct answer: ” + questions.get(i).getAnswer()); System.out.println(“Your answer: ” + answers.get(i)); 
System.out.print(“Your answer was “);
if (!results) { System.out.print(“not “); }
System.out.println(“correct.”);
} } } 

You need to take an OO approach to the code. 

text to be read from file

T
Which Java keyword is used to define a subclass?
extends

S
What is the original name of the Java language?
– *7
– C–
+ Oak
– Gosling

M
Which of the following types are supertypes of Rectangle?
– PrintStream
+ Shape
+ RectangularShape
+ Object
– String

N
What is the square root of 2?
1.41421356