SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

        Timestamp timestamp =(Timestamp)user.get("lastaccept_time");         //2016-05-12 12:23:12.0         java.util.Date date=null;         if (timestamp!=null){              date = new java.util.Date(timestamp.getTime());         }

        String timeLastaccept1 = formatter.format(date);

        user.put("lastaccept_time",timeLastaccept1)；