Quiz-application

import java.util.ArrayList; import java.util.Scanner;

class Question { private String text; private String[] options; private int correctAnswer;

public Question(String text, String[] options, int correctAnswer) {
    this.text = text;
    this.options = options;
    this.correctAnswer = correctAnswer;
}

public void display() {
    System.out.println(text);
    for (int i = 0; i < options.length; i++) {
        System.out.println((i + 1) + ". " + options[i]);
    }
}

public boolean isCorrect(int userAnswer) {
    return userAnswer == correctAnswer;
}

}

class Quiz { private ArrayList questions;

public Quiz() {
    this.questions = new ArrayList<>();
}

public void addQuestion(Question question) {
    questions.add(question);
}

public int takeQuiz() {
    int score = 0;
    for (Question question : questions) {
        question.display();
        int userAnswer = getUserInput();
        if (question.isCorrect(userAnswer)) {
            score++;
        }
    }
    return score;
}

public int size() {
    return questions.size();
}

private static int getUserInput() {
    Scanner scanner = new Scanner(System.in);
    while (true) {
        try {
            int userAnswer = Integer.parseInt(scanner.nextLine());
            if (userAnswer >= 1 && userAnswer <= 4) {
                return userAnswer;
            } else {
                System.out.println("Invalid input. Please enter a number between 1 and 4.");
            }
        } catch (NumberFormatException e) {
            System.out.println("Invalid input. Please enter a number.");
        }
    }
}


public static void main(String[] args) {
    // Create Questions
    Question question1 = new Question("What is the capital of India ?", new String[]{" New Delhi", "Mumbai", "Bangalure", "Kolkata"}, 1);
    Question question2 = new Question("What is the largest ocean on Earth?", new String[]{"Indian ocean", "Pacific ocean", "Atlantic ocean", "Arctic Ocean"}, 2);
    Question question3 = new Question("Smallest state of India is?", new String[]{"Puducherry", "Tripura", "Goa", "Sikkim"}, 3);
    // Create Quiz
    Quiz quiz = new Quiz();
    quiz.addQuestion(question1);
    quiz.addQuestion(question2);
    quiz.addQuestion(question3);

    // Take Quiz
    int userScore = quiz.takeQuiz();

    // Display Score
    System.out.println("\nYour score: " + userScore + "/" + quiz.size());
}

@Override
public String toString() {
    return "Main []";
}

public ArrayList<Question> getQuestions() {
    return questions;
}

public void setQuestions(ArrayList<Question> questions) {
    this.questions = questions;
}

}