Add multiple choice to Dialog and make it functioning
<p>What I want is to add a question with 3-4 options to the <code>JDialog</code></p>

<pre><code>    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;

    public class VocabHelper {

        private JFrame mainFrame;

        private JPanel mainPanel;

        private JPanel animalPanel;

        public JDialog animalDialog;

        private JLabel titleLbl;

    private JLabel subtitle;


//Call main GUI

    public VocabHelper() {

        mainGUI();
    }

//Main Method

    public static void main(String[] args) {
        VocabHelper vocabHelper = new VocabHelper();
        vocabHelper.showActionEvents();
    }

//Edit the mainGUI

    private void mainGUI() {
        mainFrame = new JFrame("VocabHelper");
        mainFrame.setSize(500, 500);


        /*titleLbl = new JLabel("Vocab Helper", JLabel.CENTER);
        subtitle = new JLabel("Choose a category to continue", JLabel.CENTER);
        mainFrame.add(titleLbl);
        mainFrame.add(subtitle);*/

        mainFrame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent windowEvent) {
                System.exit(0);
            }
        });
        mainPanel = new JPanel();
        mainFrame.add(mainPanel);
        mainFrame.setVisible(true);
    }

//Create quizGUI

    public void quizGUI() {
        quizDialog = new JDialog();
        quizDialog.setName("Quiz 1");
        quizDialog.setSize(500,500);
        quizDialog.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
        quizDialog.setVisible(false);

        addQuizEvent();
    }

//add Buttons and listeners

    public void showActionEvents() {

        JButton quizButton = new JButton("quiz");
        JButton biologyButton = new JButton("Biology");
        JButton geologyButton = new JButton("Geology");
        JButton historyButton = new JButton("History");
        JButton sportsButton = new JButton("Sports");
        JButton techButton = new JButton("Technology");

        quizButton.setActionCommand("Quiz");
        biologyButton.setActionCommand("Biology");
        geologyButton.setActionCommand("Geology");
        historyButton.setActionCommand("History");
        sportsButton.setActionCommand("Sports");
        techButton.setActionCommand("Technology");

        QuizButton.addActionListener(new ButtonClickListener());
        biologyButton.addActionListener(new ButtonClickListener());
        geologyButton.addActionListener(new ButtonClickListener());
        historyButton.addActionListener(new ButtonClickListener());
        sportsButton.addActionListener(new ButtonClickListener());
        techButton.addActionListener(new ButtonClickListener());

        mainPanel.add(QuizButton);
        mainPanel.add(biologyButton);
        mainPanel.add(geologyButton);
        mainPanel.add(historyButton);
        mainPanel.add(sportsButton);
        mainPanel.add(techButton);

        mainFrame.setVisible(true);
    }
//add events to quiz dialog this is where i want to create the multiple choice questins the classes will be below.

    public void addQuizEvent() {
        JButton nextButton = new JButton("Next");
        nextButton.setActionCommand("Next");
        nextButton.addActionListener(new ButtonClickListener());
        quizDialog.add(nextButton);
        quizDialog.setVisible(true);
    }

//When button quiz is pressed open dialog

    private class ButtonClickListener implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            String command = e.getActionCommand();
            if (command.equals("Quiz")) {
                quizGUI();
            }
        }
    }
}

//Class tester for the multiple choice im thinking this is what goes in the dialog i just dont know how.

    public class QuizTester
    {
    public static void main(String[] args)
    {

    //Multiple choice question
      ChoiceQuestion second = new ChoiceQuestion();
      second.setText("In which country was the inventor of Java born?");
      second.addChoice("Australia", false);
      second.addChoice("Canada", true);
      second.addChoice("Denmark", false);
      second.addChoice("United States", false);

    //create quiz and add the questions to the quiz then present the quiz
      Quiz q = new Quiz();
      q.addQuestion(second);
      q.presentQuestions();
   }
}

//new class for multiple choice logic

    import java.util.ArrayList;

/**
   A question with multiple choices.
*/

    public class ChoiceQuestion {
    private ArrayList&lt;String&gt; choices;

   /**
      Constructs a choice question with no choices.
   */

    public ChoiceQuestion()
    {
       choices = new ArrayList&lt;String&gt;();
    }

   /**
      Adds an answer choice to this question.
      @param choice the choice to add
      @param correct true if this is the correct choice, false otherwise
   */

     public void addChoice(String choice, boolean correct)
     {
      choices.add(choice);
      if (correct) 
      {
         // Convert choices.size() to string
         String choiceString = "" + choices.size();
         setAnswer(choiceString);
      }
   }

    public void display()
    {
        // Display the question text
        super.display();
        // Display the answer choices
        for (int i = 0; i &lt; choices.size(); i++)
        {
          int choiceNumber = i + 1;
          System.out.println(choiceNumber + ": " + choices.get(i));     
          }
        }
     }

//class for the quiz where the quiz is created.

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

/**
   A quiz contains a list of questions.
*/

      public class Quiz
      {
      private ArrayList&lt;Question&gt; questions;

   /**
      Constructs a quiz with no questions.
   */

     public Quiz()
     {
       questions = new ArrayList&lt;Question&gt;();
     }

   /**
      Adds a question to this quiz.
      @param q the question
   */

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

   /**
      Presents the questions to the user and checks the response.
   */

     public void presentQuestions()
     {
        Scanner in = new Scanner(System.in);

        for (Question q : questions)
        {
           q.display();
           System.out.print("Your answer: ");
           String response = in.nextLine();
           System.out.println(q.checkAnswer(response));\
//over here display this question but in the dialog and with bubbles that they can click on.
       }
    }
 }
</code></pre>