Java Day Between getMonthDifference(Date from, Date to)

Description

get Month Difference

License

Open Source License

Declaration

public static int getMonthDifference(Date from, Date to) 

Method Source Code

//package com.java2s;
/*/*from   w  w w .  j a v  a2  s.co m*/
 * Copyright (c) 2007 - 2010 Abiss.gr <info@abiss.gr>  
 *
 *  This file is part of Calipso, a software platform by www.Abiss.gr.
 *
 *  Calipso is free software: you can redistribute it and/or modify 
 *  it under the terms of the GNU Affero General Public License as published by 
 *  the Free Software Foundation, either version 3 of the License, or 
 *  (at your option) any later version.
 * 
 *  Calipso is distributed in the hope that it will be useful, 
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of 
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
 *  GNU Affero General Public License for more details.
 * 
 *  You should have received a copy of the GNU General Public License 
 *  along with Calipso. If not, see http://www.gnu.org/licenses/agpl.html
 * 
 * This file incorporates work released by the JTrac project and  covered 
 * by the following copyright and permission notice:  
 * 
 *   Copyright 2002-2005 the original author or authors.
 * 
 *   Licensed 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 int getMonthDifference(Date from, Date to) {
        Calendar fromCalendar = toMidnightCalendar(from);
        Calendar toCalendar = toMidnightCalendar(to);
        return getMonthDifference(fromCalendar, toCalendar);
    }

    public static int getMonthDifference(Calendar fromCalendar, Calendar toCalendar) {
        int count = 0;
        for (fromCalendar.add(Calendar.MONTH, 1); fromCalendar.compareTo(toCalendar) <= 0; fromCalendar
                .add(Calendar.MONTH, 1)) {
            count++;
        }
        return count;
    }

    /**
     * Convert the time to the midnight of the given date or 
     * now if null. 
     *
     * @return the calendar representing midnight for the given date or 
     * today if null. 
     */
    public static Calendar toMidnightCalendar(Date date) {
        Calendar cal = Calendar.getInstance();
        if (date != null) {
            cal.setTime(date);
        }
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);
        return cal;
    }
}

Related

1. getDifferencesBetweenIndicateDays( final Date minorDate, final Date majorDate)
2. getDiffMilliSeconds(Date form, Date to)
3. getManyWeeksDifference(Date a, Date b)
4. getMinuteDiffByTime(Date time1, Date time2)
5. getMinutesDifference(final Date begin, final Date end)
6. getMonthsDifference(Date earlierDate, Date laterDate)
7. getNumDaysDiffExclTime(Date date1, Date date2)
8. getTimeDifference(Date d1, Date d2)
9. getTimeDifference(Date date1, Date date2)