Java Utililty Methods Millisecond Format

long seconds = millis / 1000;
long minutes = seconds / 60;
long hours = minutes / 60;
long days = hours / 24;
return days + " days " + hours % 24 + " hours " + minutes % 60 + " min " + seconds % 60 + " sec";

boolean isMinutes = false;
double instTime = millis;
String suffix = "milliseconds";
if (instTime > (60 * 1000)) {
    suffix = "minutes";
    instTime = instTime / (60 * 1000);
    isMinutes = true;
} else if (instTime > 1000) {
...

int hours = (int) (millis / (1000 * 60 * 60));
int minutes = (int) (millis / (1000 * 60)) % 60;
int seconds = (int) (millis / 1000) % 60;
StringBuilder sb = new StringBuilder();
if (hours > 0) {
    sb.append(hours);
    sb.append(':');
if (minutes < 10 && hours > 0) {
    sb.append(0);
sb.append(minutes);
sb.append(':');
if (seconds < 10) {
    sb.append(0);
sb.append(seconds);
return sb.toString();

Date date = new Date(t);
return formatDate(date);

return time + MILLIS;

long millis = time - (1000 * (time / 1000));
time /= 1000;
long seconds = time - (60 * (time / 60));
time /= 60;
long minutes = time - (60 * (time / 60));
time /= 60;
long hours = time;
String res = hours + ":" + (minutes < 10 ? "0" : "") + minutes + ":" + (seconds < 10 ? "0" : "") + seconds;
...

long timeSeconds = timeMillis / 1000;
long days = timeSeconds / 60 / 60 / 24;
long hours = timeSeconds / 60 / 60 % 24;
long mins = timeSeconds / 60 % 60;
long seconds = timeSeconds % 60;
StringBuilder sb = new StringBuilder();
boolean hasDays = days > 0;
boolean hasHours = hours > 0;
...

Date date;
if (format == null || "".equals(format)) {
    format = "yyyy-MM-dd HH:mm:ss";
SimpleDateFormat sdf = new SimpleDateFormat(format);
if (millisecond != null && millisecond.matches("\\d+")) {
    date = new Date(Long.parseLong(millisecond));
    return sdf.format(date);
...

BigDecimal value = new BigDecimal(millis).divide(MILLIS_DIVISOR, 3, BigDecimal.ROUND_HALF_UP);
return MILLIS_NUMBER_FORMAT.format(value);

return formatMillisAsShortHumanReadablePeriod(millis, false);