Online Quiz Application

Overview

A console-based Java application for managing and taking quizzes. This application allows admins to create, edit, delete quizzes and questions, while users can log in, take quizzes, and view scores.

Features

• User Authentication: Sign up, log in, and secure session management.
• Quiz Management: Admins can create, edit, delete quizzes and add questions.
• Quiz Taking: Users can select quizzes, receive instant feedback, and see scores.
• Progress Tracking: Users can view past quiz attempts and scores.
• Leaderboard: Displays top scorers based on quiz performance.

Prerequisites

• Java JDK 8+
• MySQL database
• MySQL JDBC Connector (mysql-connector-java)

Setup Instructions

1. Clone the Repository:

   git clone https://github.com/shasidhar7/OnlineQuizApplication.git
   

2. Database Setup:

   • Create the quizapp database in MySQL and run the following SQL script to create the necessary tables:

CREATE DATABASE quizapp;
USE quizapp;

CREATE TABLE users (
    id INT AUTO_INCREMENT PRIMARY KEY,
    username VARCHAR(255) UNIQUE NOT NULL,
    hashed_password VARCHAR(255) NOT NULL,
    salt VARCHAR(255) NOT NULL,
    role ENUM('admin', 'user') NOT NULL
);

CREATE TABLE quizzes (
    id INT AUTO_INCREMENT PRIMARY KEY,
    title VARCHAR(255) NOT NULL,
    description TEXT NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE questions (
    id SERIAL PRIMARY KEY,
    quiz_id INT NOT NULL,
    question TEXT NOT NULL,
    option1 TEXT NOT NULL,
    option2 TEXT NOT NULL,
    option3 TEXT NOT NULL,
    option4 TEXT NOT NULL,
    correct_answers TEXT NOT NULL,
    FOREIGN KEY (quiz_id) REFERENCES quizzes(id)
);

CREATE TABLE quiz_attempts (
    id SERIAL PRIMARY KEY,
    user_id INT NOT NULL,
    quiz_id INT NOT NULL,
    score INT NOT NULL,
    attempt_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (user_id) REFERENCES users(id),
    FOREIGN KEY (quiz_id) REFERENCES quizzes(id)
);

3. Database Configuration: Ensure your database is set up with the correct credentials, and replace them in the code where necessary:

   • Database URL, Username and password for the MySQL connection.
   • Update DatabaseUtil with your database credentials.

4. Add the MySQL JDBC Connector:

   • Download the MySQL Connector/J JDBC Driver and add it to your project directory.

How to Use

1. Login: Use the admin or user credentials to log in.
2. Admin Features:
   • Create new quizzes.
   • Add questions to quizzes.
   • Edit or delete existing quizzes and questions.
3. Use Features:
   • Take Quizzes.
   • View scores after each quiz attempt.
4. Leaderboard: View top scores based on each quiz.

Assumptions & Limitations

• Users have unique usernames.
• Basic security features are implemented, including password hashing and salting.
• Limited optimization for large datasets.