今天在项目中遇到进行计算流程单从开始到结束所花费的时间，样式是XX天XX小时XX秒，有天显示天，没有就不显示；

代码献上：

package com.project.model.work;

public class DateFormat {

/*

* 将毫秒转化为天时分秒毫秒

*/

public static String formatTime(Long ms) {

Integer ss = 1000;

Integer mi = ss * 60;

Integer hh = mi * 60;

Integer dd = hh * 24;

Long day = ms / dd;

Long hour = (ms - day * dd) / hh;

Long minute = (ms - day * dd - hour * hh) / mi;

Long second = (ms - day * dd - hour * hh - minute * mi) / ss;

Long milliSecond = ms - day * dd - hour * hh - minute * mi - second * ss;

StringBuffer sb = new StringBuffer();

if(day > 0) {

sb.append(day+"天");

}

if(hour > 0) {

sb.append(hour+"小时");

}

if(minute > 0) {

sb.append(minute+"分");

}

if(second > 0) {

sb.append(second+"秒");

}

if(milliSecond > 0) {

sb.append(milliSecond+"毫秒");

}

return sb.toString();

}

public static void main(String[] args) {

System.out.println(formatTime(78640000l));;

}

}