The update command is acting weird(Android/SQLite)

I've been trying to update my database when i click the FloatingActionButton using the code below. But something is wrong.

    year=intent.getIntExtra("year",0);
    fabUpdate.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            TextView t=(TextView)findViewById(R.id.textView2);
            t.setText("year:"+year);
            ContentValues a=new ContentValues();
            a.put("YEAR",year);
            db.update("EXAMTABLE", a, "_id=?", new String[]{String.valueOf(position)});
        }
    });

TextView t displays the year properly(for example "year:2016"). But the database is not gettting updated with that year.

If i substitute year=intent.getIntExtra("year",0); with year=2016; directly,the database gets updated properly.

Can someone please help me understand what is wrong here, or what is causing this. And how i can make it get updated with the value passed through the intent.