Java tutorial
//package com.java2s; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Locale; import android.content.Context; import android.util.Log; public class Main { public static String calculateAge(Context context, String date) { final String FACEBOOK = "MM/dd/yyyy"; try { SimpleDateFormat sf = new SimpleDateFormat(FACEBOOK, Locale.ENGLISH); sf.setLenient(true); Date birthDate = sf.parse(date); Date now = new Date(); int age = now.getYear() - birthDate.getYear(); birthDate.setHours(0); birthDate.setMinutes(0); birthDate.setSeconds(0); birthDate.setYear(now.getYear()); if (birthDate.after(now)) { age -= 1; } return Integer.toString(age); } catch (Exception e) { Log.d("DEBUG", "exception in getTwitterDate:"); e.printStackTrace(); return "Unknown"; } } }