private long id;

private String questionNo;

private byte[] question;

private byte[] option1;

private byte[] option2;

private byte[] option3;

private byte[] option4;

private String answer;

private byte[] explanation;

private Topic topic;

private Chapter chapter;

private Subject subject;

public int validateQuestion(Question question){
        Question questionForCheckNo=questionService.findQuestionByQuestionNo(question.getQuestionNo());
        Question existingQuestion=questionService.findById(question.getId());
        if (existingQuestion != null
                && ((question.getSubject().getId() == existingQuestion
                        .getSubject().getId())
                        && (question.getChapter().getId() == existingQuestion
                                .getChapter().getId())
                        && (question.getTopic().getId() == existingQuestion
                                .getTopic().getId())
                        && (question.getQuestionNo().equals(existingQuestion
                                .getQuestionNo()))
                        && (question.getAnswer()
                        .equals(existingQuestion.getAnswer()))
                        &&(question.getIsMock()==existingQuestion.getIsMock())
                        &&(!Arrays.equals(question.getQuestion(), existingQuestion.getQuestion()))
                        &&(!Arrays.equals(question.getOption1(), existingQuestion.getOption1()))
                        &&(!Arrays.equals(question.getOption2(), existingQuestion.getOption2()))
                        &&(!Arrays.equals(question.getOption3(), existingQuestion.getOption3()))
                        &&(!Arrays.equals(question.getOption4(), existingQuestion.getOption4()))
                        &&(!Arrays.equals(question.getExplanation(), existingQuestion.getExplanation()))

                )) {

           return 1;
        }
        else if(questionForCheckNo!=null){
            return 2;
        }



        return 0;
    }