Java Calendar Week getDateOfLastDayOfWeekInMonth(Calendar calendar, int dayOfWeek)

Description

get Date Of Last Day Of Week In Month

License

Open Source License

Declaration

public static int getDateOfLastDayOfWeekInMonth(Calendar calendar, int dayOfWeek) 

Method Source Code

//package com.java2s;
/*/*w w w  .ja  va2s. c o  m*/
 * JBoss, Home of Professional Open Source.
 * Copyright 2009, Red Hat Middleware LLC, and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

import java.util.Calendar;
import java.util.GregorianCalendar;

public class Main {
    public static int getDateOfLastDayOfWeekInMonth(Calendar calendar, int dayOfWeek) {
        int lastDateOfMonth = getLastDateOfMonth(calendar);
        Calendar tmpCal = new GregorianCalendar(calendar.getTimeZone());
        tmpCal.set(Calendar.YEAR, calendar.get(Calendar.YEAR));
        tmpCal.set(Calendar.MONTH, calendar.get(Calendar.MONTH));
        tmpCal.set(Calendar.DATE, lastDateOfMonth);

        int day = tmpCal.get(Calendar.DAY_OF_WEEK);
        if (day == dayOfWeek) {
            return tmpCal.get(Calendar.DATE);
        }
        while (day != dayOfWeek) {
            tmpCal.add(Calendar.DATE, -1);
            day = tmpCal.get(Calendar.DAY_OF_WEEK);
        }
        return tmpCal.get(Calendar.DATE);
    }

    /**
     * Returns the last date of the month represented by the passed <code>cal</code>
     *
     * @param calendar The {@link Calendar} whose {@link Calendar#MONTH} field will be used
     *                 as the current month
     * @return
     */
    public static int getLastDateOfMonth(Calendar calendar) {
        Calendar tmpCal = new GregorianCalendar(calendar.getTimeZone());
        tmpCal.set(Calendar.YEAR, calendar.get(Calendar.YEAR));
        tmpCal.set(Calendar.MONTH, calendar.get(Calendar.MONTH));
        tmpCal.set(Calendar.DAY_OF_MONTH, 1);
        return tmpCal.getActualMaximum(Calendar.DAY_OF_MONTH);
    }
}

Related

1. convertIntToCalendarDayOfWeek(int dayOfWeek)
2. endOfWeek(Calendar calendar, Date date)
3. firstDayOfLastWeek(Calendar c)
4. getADayOfWeek(Calendar day, int dayOfWeek)
5. getDayFromPreviousWeek(Calendar requestDate)
6. getDayOfWeek(Calendar c)
7. getDayOfWeek(Calendar cal)
8. getDayOfWeek(Calendar date)