获取第几天时间的日期

     
  /** * 获取过去第几天的日期 *  * @param past * @return */public static String getPastDate(int past) {Calendar calendar = Calendar.getInstance(); // DAY_OF_YEARcalendar.set(Calendar.DAY_OF_MONTH, calendar.get(Calendar.DAY_OF_MONTH) - past);Date today = calendar.getTime();SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");String result = format.format(today);return result;}