text: public static double getExcelDate(Calendar date, boolean use1904windowing) {int year = date.get(Calendar.YEAR);int dayOfYear = date.get(Calendar.DAY_OF_YEAR);int hour = date.get(Calendar.HOUR_OF_DAY);int minute = date.get(Calendar.MINUTE);int second = date.get(Calendar.SECOND);int milliSecond = date.get(Calendar.MILLISECOND);return internalGetExcelDate(year, dayOfYear, hour, minute, second, milliSecond, use1904windowing);}