.java

//In Adapter Class
   @Override
                public void liked(LikeButton likeButton) {
                    QuestionData questionHolder = data.get(position);
                    Voting voting = new Voting(getAdapterPosition(), ViewpagerAdapter.this, questionId, questionHolder);
                    voting.onUpVote();
                    voting.realTimeUpVoting();
                }
 
 
 
 //In Voting Class
  public void realTimeDownVoting(){
        System.out.println("VoteDownBefore="+mQuestionData.getVotes());
        String voteString= mQuestionData.getVotes();
        int voteNumber=((Integer.parseInt(voteString))-1);
        mQuestionData.setVotes("" + voteNumber);
        System.out.println("VoteDownAfter=" + mQuestionData.getVotes());
    }