标记为正确的答案有一个小错误，

String myTime = String.format("%02d:%02d:%02d",
            TimeUnit.MILLISECONDS.toHours(millis),
            TimeUnit.MILLISECONDS.toMinutes(millis) -
                    TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)), // The change is in this line
            TimeUnit.MILLISECONDS.toSeconds(millis) -
                    TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis)));

例如，这是我得到的值的一个例子:

417474:44:19

这是得到正确格式的解决方案:

String myTime =  String.format("%02d:%02d:%02d",
                //Hours
                TimeUnit.MILLISECONDS.toHours(millis) -
                        TimeUnit.DAYS.toHours(TimeUnit.MILLISECONDS.toDays(millis)),
                //Minutes
                TimeUnit.MILLISECONDS.toMinutes(millis) -
                        TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)),
                //Seconds
                TimeUnit.MILLISECONDS.toSeconds(millis) -
                        TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis)));

得到一个正确的格式:

18:44:19

获取格式hh:mm:ss的其他选项是:

   Date myDate = new Date(timeinMillis);
   SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
   String myTime = formatter.format(myDate);

4个实现的测试结果

必须为巨大的数据做大量的格式化，需要最好的性能，所以下面是(令人惊讶的)结果:

For (int I = 0;I < 1000000;我+ +){ FUNCTION_CALL ｝

持续时间:

combinationFormatter: 196 millis formatDuration: 272 millis apacheFormat: 754 millis formatTimeUnit: 2216 millis public static String apacheFormat(long millis) throws ParseException { return DurationFormatUtils.formatDuration(millis, "HH:mm:ss"); } public static String formatTimeUnit(long millis) throws ParseException { String formatted = String.format( "%02d:%02d:%02d", TimeUnit.MILLISECONDS.toHours(millis), TimeUnit.MILLISECONDS.toMinutes(millis) - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)), TimeUnit.MILLISECONDS.toSeconds(millis) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis))); return formatted; } public static String formatDuration(final long millis) { long seconds = (millis / 1000) % 60; long minutes = (millis / (1000 * 60)) % 60; long hours = millis / (1000 * 60 * 60); StringBuilder b = new StringBuilder(); b.append(hours == 0 ? "00" : hours < 10 ? String.valueOf("0" + hours) : String.valueOf(hours)); b.append(":"); b.append(minutes == 0 ? "00" : minutes < 10 ? String.valueOf("0" + minutes) : String.valueOf(minutes)); b.append(":"); b.append(seconds == 0 ? "00" : seconds < 10 ? String.valueOf("0" + seconds) : String.valueOf(seconds)); return b.toString(); } public static String combinationFormatter(final long millis) { long seconds = TimeUnit.MILLISECONDS.toSeconds(millis) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis)); long minutes = TimeUnit.MILLISECONDS.toMinutes(millis) - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)); long hours = TimeUnit.MILLISECONDS.toHours(millis); StringBuilder b = new StringBuilder(); b.append(hours == 0 ? "00" : hours < 10 ? String.valueOf("0" + hours) : String.valueOf(hours)); b.append(":"); b.append(minutes == 0 ? "00" : minutes < 10 ? String.valueOf("0" + minutes) : String.valueOf(minutes)); b.append(":"); b.append(seconds == 0 ? "00" : seconds < 10 ? String.valueOf("0" + seconds) : String.valueOf(seconds)); return b.toString(); }

下面的代码以两种方式进行转换

23:59:58:999到86398999

和比

86398999到23:59:58:999

import java.util.concurrent.TimeUnit;

public class TimeUtility {

    public static void main(String[] args) {

        long currentDateTime = System.currentTimeMillis();

        String strTest = "23:59:58:999";
        System.out.println(strTest);

        long l = strToMilli(strTest);
        System.out.println(l);
        l += 1;
        String str = milliToString(l);
        System.out.println(str);
    }

    /**
     * convert a time string into the equivalent long milliseconds
     *
     * @param strTime string fomratted as HH:MM:SS:MSMS i.e. "23:59:59:999"
     * @return long integer like 86399999
     */
    public static long strToMilli(String strTime) {
        long retVal = 0;
        String hour = strTime.substring(0, 2);
        String min = strTime.substring(3, 5);
        String sec = strTime.substring(6, 8);
        String milli = strTime.substring(9, 12);
        int h = Integer.parseInt(hour);
        int m = Integer.parseInt(min);
        int s = Integer.parseInt(sec);
        int ms = Integer.parseInt(milli);

        String strDebug = String.format("%02d:%02d:%02d:%03d", h, m, s, ms);
        //System.out.println(strDebug);
        long lH = h * 60 * 60 * 1000;
        long lM = m * 60 * 1000;
        long lS = s * 1000;

        retVal = lH + lM + lS + ms;
        return retVal;
    }

    /**
     * convert time in milliseconds to the corresponding string, in case of day
     * rollover start from scratch 23:59:59:999 + 1 = 00:00:00:000
     *
     * @param millis the number of milliseconds corresponding to tim i.e.
     *               34137999 that can be obtained as follows;
     *               <p>
     *               long lH = h * 60 * 60 * 1000; //hour to milli
     *               <p>
     *               long lM = m * 60 * 1000; // minute to milli
     *               <p>
     *               long lS = s * 1000; //seconds to milli
     *               <p>
     *               millis = lH + lM + lS + ms;
     * @return a string formatted as HH:MM:SS:MSMS i.e. "23:59:59:999"
     */
    private static String milliToString(long millis) {

        long hrs = TimeUnit.MILLISECONDS.toHours(millis) % 24;
        long min = TimeUnit.MILLISECONDS.toMinutes(millis) % 60;
        long sec = TimeUnit.MILLISECONDS.toSeconds(millis) % 60;
        //millis = millis - (hrs * 60 * 60 * 1000); //alternative way
        //millis = millis - (min * 60 * 1000);
        //millis = millis - (sec * 1000);
        //long mls = millis ;
        long mls = millis % 1000;
        String toRet = String.format("%02d:%02d:%02d:%03d", hrs, min, sec, mls);
        //System.out.println(toRet);
        return toRet;
    }
}

DateFormat df = new SimpleDateFormat("HH:mm:ss");
String formatted = df.format(aDateObject);

在kotlin

private fun stringForTime(timeMs: Int): String {
    val totalSeconds = timeMs / 1000
    val seconds = totalSeconds % 60
    val minutes = totalSeconds / 60 % 60
    val hours = totalSeconds / 3600
    return if (hours > 0) {
        "%d:%02d:%02d".format(hours, minutes, seconds)
    } else {
        "%02d:%02d".format(minutes, seconds)
    }
}

在Java中

private String stringForTime(int timeMs) {
    int totalSeconds = timeMs / 1000;
    int seconds = totalSeconds % 60;
    int minutes = totalSeconds / 60 % 60;
    int hours = totalSeconds / 3600;
    return hours > 0 ? String.format(Locale.getDefault(),
            "%d:%02d:%02d",
            hours,
            minutes,
            seconds) :
            String.format(Locale.getDefault(),
                    "%02d:%02d",
                    minutes,
                    seconds);
}

我用了这个:

String.format("%1$tH:%1$tM:%1$tS.%1$tL", millis);

参见类Formatter的描述。

参见使用输入2400毫秒的可运行示例。