Convert milliseconds to String format with "00:00:00"

TimeUtil.java

public class TimeUtil {
    public static String humanReadableTimeWith(long millis) {
        final long hour = TimeUnit.MILLISECONDS.toHours(millis);
        final long minute = TimeUnit.MILLISECONDS.toMinutes(millis) -
                            TimeUnit.HOURS.toMinutes(hour);
        final long second = TimeUnit.MILLISECONDS.toSeconds(millis) -
                            TimeUnit.MINUTES.toSeconds(minute) -
                            TimeUnit.HOURS.toSeconds(hour);
        return String.format("%02d:%02d:%02d", hour, minute, second);
    }
}