public class Question {
    private SimpleStringProperty question;

    private String[] possibleAnswers;

    private SimpleIntegerProperty indexOfCorrectAnswer;

    private int numberCorrectAnswers;

    private int gegebeneAntworten;

    private int richtigeAntworten;

    public Question(String question, String[] possibleAnswers, int indexOfCorrectAnswer) {

        if (indexOfCorrectAnswer < 0 || indexOfCorrectAnswer >= possibleAnswers.length) {
            throw new IllegalArgumentException();
        }
        this.question = new SimpleStringProperty(question);
        this.possibleAnswers = possibleAnswers;
        this.indexOfCorrectAnswer = new SimpleIntegerProperty(indexOfCorrectAnswer);
        gegebeneAntworten = 0;
        richtigeAntworten = 0;
    }

    public SimpleStringProperty getQuestion() {

        return question;
    }

    public String correctAnswer() {
        return possibleAnswers[indexOfCorrectAnswer];
    }

    public String toString() {

        return question + " (Antworten: " + gegebeneAntworten + ", davon richtig: " + richtigeAntworten + ")";

    }

    public String[] getPossibleAnswers() {
        return possibleAnswers;
    }

    public void erhoeheAntwort() {
        gegebeneAntworten++;
    }

    public void erhoeheRichtigeAntwort() {
        richtigeAntworten++;
    }

    public SimpleIntegerProperty getIndexOfCorrectAnswer() {
        return indexOfCorrectAnswer;
    }

    public int getNumberofCorrectAnswers() {
        return numberCorrectAnswers;
    }

    public void resetAnswer() {
        gegebeneAntworten = 0;
        richtigeAntworten = gegebeneAntworten;
    }

}