1. 현재 날짜 public void getCurrentDate() { if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) { LocalDate now = LocalDate.now(); this.nowYear = now.getYear(); this.nowMonth = now.getMonth().getValue(); Log.d("@@@@", "nowMonth : "+ nowMonth); this.nowDay = now.getDayOfMonth(); } else { Date now = new Date(); SimpleDateFormat formatterYear = new SimpleDateFormat("yyyy"); Simple..