Java Utililty Methods TimeUnit Format

String format(final long duration, final TimeUnit sourceUnit, final TimeUnit min)
format

return format(duration, sourceUnit, min, max());

String formatDuration(long time, TimeUnit unit)
Formats a String duration property (time + optional unit).

return String.valueOf(time) + ' ' + unit.name();

String formatHighest(long duration, final TimeUnit max)
Converts time to a human readable format within the specified range

final TimeUnit[] units = TimeUnit.values();
final StringBuilder res = new StringBuilder();
TimeUnit current = max;
while (duration > 0) {
 final long temp = current.convert(duration, TimeUnit.MILLISECONDS);
 if (temp > 0) {
 duration -= current.toMillis(temp);
 res.append(temp).append(" ").append(current.name().toLowerCase());
...

String formatMillis(long duration, TimeUnit max, TimeUnit min, boolean useAbbreviation)
Converts time to a human readable format within the specified range http://stackoverflow.com/questions/3859288/how-to-calculate-time-ago-in-java

StringBuilder res = new StringBuilder();
TimeUnit current = max;
while (duration > 0) {
 long temp = current.convert(duration, MILLISECONDS);
 if (temp > 0) {
 duration -= current.toMillis(temp);
 res.append(temp).append(" ").append(current.name().toLowerCase());
 if (temp < 2) {
...

String formatMinutesSeconds(final long sourceDuration, final TimeUnit sourceUnit)
Formats the specified duration in 'mm:ss.SSS' format.

final long millis = TimeUnit.MILLISECONDS.convert(sourceDuration, sourceUnit);
final long millisInMinute = TimeUnit.MILLISECONDS.convert(1, TimeUnit.MINUTES);
final int minutes = (int) (millis / millisInMinute);
final long secondsMillisLeft = millis - minutes * millisInMinute;
final long millisInSecond = TimeUnit.MILLISECONDS.convert(1, TimeUnit.SECONDS);
final int seconds = (int) (secondsMillisLeft / millisInSecond);
final long millisLeft = secondsMillisLeft - seconds * millisInSecond;
return pad2Places(minutes) + ":" + pad2Places(seconds) + "." + pad3Places(millisLeft);
...

String formatTime(long dt, TimeUnit input, TimeUnit output, int decimalPlaces)
Returns a formatted time difference string

if (input == null)
 throw new NullPointerException("unit");
if (output == null)
 throw new NullPointerException("output");
double inputMult;
double outputMult;
String strOutUnit;
switch (input) {
...