public class QuizDemo
{
   public static void main(String[] args)
   {
      Question first = new Question();
      first.setText("Who was the inventor of Java?");
      first.setAnswer("James Gosling");      

      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);

      Quiz q = new Quiz();
      q.addQuestion(first);
      q.addQuestion(second);
      q.presentQuestions();
   }
}