时间加减天数

时间加减天数

public static Date dateAddDays(Date startDate, int days) {
   if (startDate == null) {
      startDate = new Date();
   }
   Calendar c = Calendar.getInstance();
   c.setTime(startDate);
   c.set(Calendar.DATE, c.get(Calendar.DATE) + days);
   return c.getTime();
}

日期相加减天数

/**
 * 日期相加减天数
 * @param date 如果为Null，则为当前时间
 * @param days 加减天数
 * @param includeTime 是否包括时分秒,true表示包含
 * @return
 * @throws ParseException
 */
public static Date dateAdd(Date date, int days, boolean includeTime) throws ParseException {
   if (date == null) {
      date = new Date();
   }
   if (!includeTime) {
      SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
      date = sdf.parse(sdf.format(date));
   }
   Calendar cal = Calendar.getInstance();
   cal.setTime(date);
   cal.add(Calendar.DATE, days);
   return cal.getTime();
}