Java Calendar Week getFirstDateInMonthForDayOfWeek(Calendar cal, final int dayOfWeek)

Description

get First Date In Month For Day Of Week

License

Open Source License

Declaration

private static int getFirstDateInMonthForDayOfWeek(Calendar cal, final int dayOfWeek) 

Method Source Code

//package com.java2s;
/*//from  w  ww .  j  a v  a 2  s .c om
 * 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 {
    private static int getFirstDateInMonthForDayOfWeek(Calendar cal, final int dayOfWeek) {
        Calendar tmpCal = new GregorianCalendar(cal.getTimeZone());
        tmpCal.set(Calendar.YEAR, cal.get(Calendar.YEAR));
        tmpCal.set(Calendar.MONTH, cal.get(Calendar.MONTH));
        tmpCal.set(Calendar.DATE, 1);

        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);
    }
}

Related

1. getDayOfWeek(Calendar cal)
2. getDayOfWeek(Calendar date)
3. getDayOfWeekNumber(Calendar cal)
4. getDayOfWeekString1(Calendar currentDate)
5. getEndOfWeek(Calendar calendar, Date date, int dayStartOfWeek)
6. getFirstDayOfWeek(Calendar cal)
7. getFirstDayOfWeek(Calendar calendar)
8. getFirstOfMonthDayOfWeek(GregorianCalendar aCalendar)
9. getImmediateDayOfWeek(Calendar current, int dayOfWeek)