java根据开始时间和结束时间，计算中间天数，并打印

import java.text.SimpleDateFormat;import java.util.Date;public class Calcdate {    static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");    static SimpleDateFormat ymd = new SimpleDateFormat("yyyy-MM-dd");    public static void main(String[] args)throws Exception{        Date beginTime = sdf.parse("2015-04-23 12:32:44");//        Date endTime = sdf.parse("2015-04-23 14:56:44");        Date endTime = sdf.parse("2015-04-29 14:56:44");        long diff = (endTime.getTime() - beginTime.getTime()) / (86400 * 1000);        System.out.println("diff = " + diff);        Date sb = null;        Date se = null;        if(diff == 0){            sb = beginTime;            se = endTime;            String ss = String.format("%d> Sb=%s, Se=%s", 1, Coder.DateTimeToStr(sb), Coder.DateTimeToStr(se));            System.out.println(ss);        }else {            int i = 0;            while (i <= diff) {                if (i == 0) {                    sb = beginTime;                    se = sdf.parse(ymd.format(sb) + " 23:59:59");                } else if (i == diff) {                    sb = sdf.parse(ymd.format(endTime) + " 00:00:00");                    se = endTime;                } else {                    se = new Date(beginTime.getTime() + i * 24 * 60 * 60 * 1000);                    sb = sdf.parse(ymd.format(se) + " 00:00:00");                    se = sdf.parse(ymd.format(se) + " 23:59:59");                }                String ss = String.format("%d> Sb=%s, Se=%s", i, Coder.DateTimeToStr(sb), Coder.DateTimeToStr(se));                System.out.println(ss);                i++;            }        }    }}

diff = 60> Sb=2015-04-23 12:32:44, Se=2015-04-23 23:59:591> Sb=2015-04-24 00:00:00, Se=2015-04-24 23:59:592> Sb=2015-04-25 00:00:00, Se=2015-04-25 23:59:593> Sb=2015-04-26 00:00:00, Se=2015-04-26 23:59:594> Sb=2015-04-27 00:00:00, Se=2015-04-27 23:59:595> Sb=2015-04-28 00:00:00, Se=2015-04-28 23:59:596> Sb=2015-04-29 00:00:00, Se=2015-04-29 14:56:44