1. 直接上干货：(可提取为工具类收藏哦 ^_^)

package com.drew.utils;

import java.text.SimpleDateFormat;

import java.util.Date;

/**

* long类型数字转换成时分秒毫秒格式

*

* @author zero 2019/04/11

*/

public class ConvertorTime {

public static void main(String[] args) {

int seconds = 17854, msec = 360000;// 秒，毫秒

System.out.println(secToTime(seconds));

System.out.println(msec + "毫秒转换格式时间：\t" + msecToTime(msec));

System.out.println("当前时间(时:分：秒.毫秒)\t" + new SimpleDateFormat("HH:mm:ss.SSS").format(new Date()));

}

/**

* 秒转换小时-分-秒analytics/util/DateUtil.java

*

* @param seconds 秒为单位 比如..600秒

* @return 比如...2小时3分钟52秒

*/

public static String secToTime(int seconds) {

int hour = seconds / 3600;

int minute = (seconds - hour * 3600) / 60;

int second = (seconds - hour * 3600 - minute * 60);

StringBuffer sb = new StringBuffer();

if (hour > 0) {

sb.append(hour + "小时");

}

if (minute > 0) {

sb.append(minute + "分");

}

if (second > 0) {

sb.append(second + "秒");

}

if (second == 0) {

sb.append("<1秒");

}

return sb.toString();

}

/**

* 将int类型数字转换成时分秒毫秒的格式数据

*

* @param time long类型的数据

* @return HH:mm:ss.SSS

* @author zero 2019/04/11

*/

public static String msecToTime(int time) {

String timeStr = null;

int hour = 0;

int minute = 0;

int second = 0;

int millisecond = 0;

if (time <= 0)

return "00:00:00.000";

else {

second = time / 1000;

minute = second / 60;

millisecond = time % 1000;

if (second < 60) {

timeStr = "00:00:" + unitFormat(second) + "." + unitFormat2(millisecond);

} else if (minute < 60) {

second = second % 60;

timeStr = "00:" + unitFormat(minute) + ":" + unitFormat(second) + "." + unitFormat2(millisecond);

} else {// 数字>=3600 000的时候

hour = minute / 60;

minute = minute % 60;

second = second - hour * 3600 - minute * 60;

timeStr = unitFormat(hour) + ":" + unitFormat(minute) + ":" + unitFormat(second) + "."

+ unitFormat2(millisecond);

}

}

return timeStr;

}

public static String unitFormat(int i) {// 时分秒的格式转换

String retStr = null;

if (i >= 0 && i < 10)

retStr = "0" + Integer.toString(i);

else

retStr = "" + i;

return retStr;

}

public static String unitFormat2(int i) {// 毫秒的格式转换

String retStr = null;

if (i >= 0 && i < 10)

retStr = "00" + Integer.toString(i);

else if (i >= 10 && i < 100) {

retStr = "0" + Integer.toString(i);

} else

retStr = "" + i;

return retStr;

}

}

2. 测试结果：