Write a Java documented program to perform the role of a quiz maker. The program

Question

Write a Java documented program to perform the role of a quiz maker. The program should work as follows:

Prompt the student to enter their user name and password.

Read a file that contains a list of all students’ information to validate the login credentials.

Start the quiz only when the credentials are correct. After 3 failed attempts, exit the program.

Randomly pick ten questions from the TestBank.txt file. Display one question at a time.

Get the answer then move to the next question. Do not accept answers other than true or false (T or F should be fine too).

The answers should not be case sensitive. When the user is done with the quiz, print out a report (On screen and on a file) with the below information in it:

First name Last name Score Elapsed time User’s answers and the correct answer.

Name the file from step 5 as follows: (userName_COSC_236_Quiz_Date_Time), where: userName is the actual user name of the student who took the quiz. Date_Time is the date and time of the start of the test.

Prompt for another user name and password or done as a user name to exit.

Explanation / Answer

public class Question {
   private String text;
   private boolean answer;
  
   public Question(String txt, boolean ans){
       setText(txt);
       setAnswer(ans);
   }

   public String getText() {
       return text;
   }

   public void setText(String text) {
       this.text = text;
   }

   public boolean isAnswer() {
       return answer;
   }

   public void setAnswer(boolean answer) {
       this.answer = answer;
   }
}

//=============================================

import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.Scanner;

public class Quiz {
   public static Scanner sc;
   public static List<Question> questions;
   public static void main(String[] args) {
       questions = new ArrayList<>();
       if(login("users.txt")){
           loadQuestions("TestBank.txt");
           showQuestions();
       }
   }
   public static void loadQuestions(String filename){
       try{
           Scanner fr = new Scanner(new File(filename));
           while(fr.hasNext()){
               String[] data = fr.nextLine().split(" ");
               Question q = new Question(data[0], Boolean.parseBoolean(data[1]));
               questions.add(q);
           }
           fr.close();
       }catch(FileNotFoundException e){
          
       }
   }
   public static void showQuestions(){
       Random rand = new Random();
       int start = Math.abs(rand.nextInt())%questions.size();
       int count = 0;
       int i=start;
       int score = 0;
       sc = new Scanner(System.in);
       while(count < 5){
           i = i%questions.size();
           Question q = questions.get(i);
           System.out.println(q.getText());
           System.out.println("Enter Answer(True/False):");
           boolean ans = Boolean.parseBoolean(sc.next());
           if(q.isAnswer() == ans){
               score ++;
           }
           i++;
           count++;
       }
       System.out.println("Your Score is "+score+" our of "+5+" ");
   }
   public static boolean login(String filename){
      
       try{
           Scanner fr;
           sc = new Scanner(System.in);
           int retry = 0;
           while(retry < 3){
               retry++;
              
               System.out.println("Enter User Name :");
               String uname = sc.next();
               System.out.println("Enter Password :");
               String pass = sc.next();
               fr = new Scanner(new File(filename));
               while(fr.hasNext()){
                   String[] data = fr.nextLine().split(" ");
                   if(data[0].equals(uname) && data[1].equals(pass)){
                       return true;
                   }
               }
               fr.close();
               System.out.println("Incorrect login! Try again. ");
           }
          
       }catch(FileNotFoundException e){
           e.printStackTrace();
       }
       System.out.println("You attempted 3 Incorrect login. ");
       return false;
   }
  
}

//=======================================

TestBank.txt

questin1 true
questin2 true
questin3 false
questin4 true
questin5 false
questin6 true
questin7 false
questin8 true
questin9 false

//===========================

users.txt

lok pass
lok 44
un passwd

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