Finding the time between two Dates

[jitechno]

..................
System.out.println("You are: \nYears: " + (int) yearz + "\nMonths: "
+ totalMonths + "\nDays: " + (int) dayz + "\nHours: " + hours
+ "\nMinutes: " + minutes + "\nSeconds: " + seconds + " old");
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis((long) d);
DateFormat formatter = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss.SSS");
System.out.println(formatter.format(calendar.getTime()));
}

This is what i have so far. It calculates the year and month correctly but it has a little trouble with the day
Ex.
if the user enters Dec. 1, 1990 for their birth date the output should be
You are 19 years, 4 months, 12 days, 8 hours, 44 minutes, and 39 seconds old.

Thanks in advance

If you dont ;like 8 hours, 44 minutes, and 39 seconds old.
, dont print this information.