Here you can find the source of getMonthsBetweenBeginDateAndEndDate(Date beginDate, Date endDate)
public static Integer getMonthsBetweenBeginDateAndEndDate(Date beginDate, Date endDate)
//package com.java2s; /*/*from w ww. j a v a2 s .c o m*/ * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ import java.util.Calendar; import java.util.Date; public class Main { public static Integer getMonthsBetweenBeginDateAndEndDate(Date beginDate, Date endDate) { Calendar cal1 = Calendar.getInstance(); cal1.setTime(beginDate); Calendar cal2 = Calendar.getInstance(); cal2.setTime(endDate); int year = cal2.get(Calendar.YEAR) - cal1.get(Calendar.YEAR); int month = cal2.get(Calendar.MONTH) - cal1.get(Calendar.MONTH); month = year * 12 + month; month += 1; return month; } }