java计算年度剩余天数

输入日期 计算当年天数

public static int parseRemainDays(String strDate){ 
	if(strDate==null || strDate.isEmpty() || strDate.length()<10){ 
		return -1;
	}
	SimPleDateFormat sm = new SimPleDateFormat(strDate.length()>18?"yyyy-MM-dd HH:mm:ss":"yyyy-MM-dd");
	Date date=null;
	try{ 
		date=sm.parse(strDate);
	}catch(ParseException ex){ 
		ex.printStackTrace();
		return -1;
	}
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(date);
	return calendar.getActualMaximum(Calendar.DAY_OF_YEAR)  - calendar.get(Calendar.DAY_OF_YEAR)
}