把时间戳转换成标准格式

import java.text.SimpleDateFormat;

import java.util.Date;

 

public static class DateUtil {

        public static String stampToDate(String s){

                 String res;

                    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");

                    long lt = new Long(s);

                    Date date = new Date(lt);

                    res = simpleDateFormat.format(date);

                    return res;

        }

}