<span style="font-size:18px;"><span style="white-space:pre">		</span>//減去多少天
		String remindNo="5";
		String dateTime="2016-06-01";
		 SimpleDateFormat sdf= new SimpleDateFormat("yyyy-MM-dd");
		   Date date=null;
		   String remindTime=null;
		 date=sdf.parse(dateTime);
		 Calendar calendar=Calendar.getInstance();
		 calendar.setTime(date);
		 
		 calendar.set(calendar.DATE,calendar.get(calendar.DATE) - Integer.parseInt(remindNo));
		 //返回減去後的最終時間
		remindTime =sdf.format(calendar.getTime());
		
		System.out.println(remindTime);</span>