Java Utililty Methods Duration

String printDuration(double uptime)
Prints the duration in a human readable format as X days Y hours Z minutes etc.

NumberFormat fmtI = new DecimalFormat("###,###", new DecimalFormatSymbols(Locale.ENGLISH));
NumberFormat fmtD = new DecimalFormat("###,##0.000", new DecimalFormatSymbols(Locale.ENGLISH));
uptime /= 1000;
if (uptime < 60) {
 return fmtD.format(uptime) + " seconds";
uptime /= 60;
if (uptime < 60) {
...

DateFormat roundedRelativeFormat()
rounded Relative Format

return new DateFormat() {
 public StringBuffer format(Date date, StringBuffer toAppendTo, FieldPosition fieldPosition) {
 Date now = new Date();
 long secondsDiff = (now.getTime() - date.getTime()) / 1000;
 if (secondsDiff <= 1) {
 return toAppendTo.append("1 second ago");
 } else if (secondsDiff < 60) {
 return toAppendTo.append(secondsDiff).append(" seconds ago");
...