Java tutorial
//package com.java2s; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; import java.util.Locale; public class Main { public static int monthsBetweenDates(String start, String end) throws ParseException { SimpleDateFormat format = new SimpleDateFormat("MMMM, yyyy", Locale.getDefault()); Date startDate = format.parse(start); Date endDate = format.parse(end); Calendar startCalendar = new GregorianCalendar(); startCalendar.setTime(startDate); Calendar endCalendar = new GregorianCalendar(); endCalendar.setTime(endDate); int diffYear = endCalendar.get(Calendar.YEAR) - startCalendar.get(Calendar.YEAR); return diffYear * 12 + endCalendar.get(Calendar.MONTH) - startCalendar.get(Calendar.MONTH); } }