Mine

public String getDuration()
	{
	Date theDate = new Date(Long.valueOf(preTime).longValue());
	SimpleDateFormat formatter = new SimpleDateFormat("MM/dd/yyyy");
	dateString = formatter.format(theDate);
	long ldate = System.currentTimeMillis();
	BigInteger localDate = BigInteger.valueOf(ldate);
	long llong = Long.valueOf(preTime).longValue(); 
	BigInteger preDate = BigInteger.valueOf(llong);
	BigInteger c = localDate.subtract(preDate);
	long thousand = 1000;
	BigInteger kou = BigInteger.valueOf(thousand);
	BigInteger days = c.divide(kou);
	int myDays, myHours, myMinutes, mySeconds, myWeeks, myMonths;
	int seconds = days.intValue();  
	seconds2 = c.intValue();  // this is for precheck, do we need 2?
	myMonths = seconds / 2629743;
	seconds = seconds - (myMonths * 2629743);
	myWeeks = seconds / 604800;
	seconds = seconds - (myWeeks * 604800);
	myDays = seconds / 86400; 
	seconds = seconds - (myDays * 86400);
	myHours = seconds / 3600;
	seconds = seconds - (myHours * 3600);
	myMinutes = seconds / 60;
	seconds = seconds - (myMinutes * 60);
	mySeconds = seconds;
	
	if(myMonths>0) {
		preDuration = myMonths + "m " + myWeeks + "w " + myDays + "d " + myHours + "h " + myMinutes + "m " + mySeconds + "s";
	} else if(myWeeks>0) {
		preDuration = myWeeks + "w " + myDays + "d " + myHours + "h " + myMinutes + "m " + mySeconds + "s";
	} else if(myDays>0) {
		preDuration = myDays + "d " + myHours + "h " + myMinutes + "m " + mySeconds + "s";
	} else if(myHours>0) {
		preDuration = myHours + "h " + myMinutes + "m " + mySeconds + "s";
	} else if(myMinutes>0) {
		preDuration = myMinutes + "m " + mySeconds + "s";
	} else if(mySeconds>0) {
		preDuration = mySeconds + "s";
	}
	
	return preDuration;
	}