private void resetClassOpen() { FILE_WEEK = CLASS_TIME.get(Calendar.WEEK_OF_YEAR) - OPEN_TIME.get(Calendar.WEEK_OF_YEAR) + 1; String str = helper.getClassOpen(); String[] arr = str.split("-"); OPEN_TIME.set(Calendar.YEAR, Integer.parseInt(arr[0])); OPEN_TIME.set(Calendar.MONTH, Integer.parseInt(arr[1])); OPEN_TIME.set(Calendar.DAY_OF_MONTH, Integer.parseInt(arr[2])); }