日期简单操作

public static String getStringDate(String startDate,String endDate,String startTime,String endTime){        String result = "";        SimpleDateFormat format1 = new SimpleDateFormat("yyyyMMdd");        SimpleDateFormat format2 = new SimpleDateFormat("yyyy-MM-dd");        Date startD = null;        Date endD = null;        String start,end;        try {            startD = format1.parse(startDate);            endD = format1.parse(endDate);            start = format2.format(startD);            end = format2.format(endD);            result = start + ":" + startTime + "#" + end + ":" + endTime;        } catch (ParseException e) {            e.printStackTrace();        }        return result;    }