Java Month Day getFirstDayOfMonth(Date date)

Description

get First Day Of Month

License

Open Source License

Declaration

public static Date getFirstDayOfMonth(Date date) 

Method Source Code

//package com.java2s;
/*/*from w  ww  .j av a2 s .  c  o m*/
 * #%L
 * Webstar Newsletter
 * %%
 * Copyright (C) 2013 Webstar Csoport Kft.
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the 
 * License, or (at your option) any later version.
 * 
 * This program 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public 
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/gpl-3.0.html>.
 * #L%
 */

import java.util.*;

public class Main {
    public static Date getFirstDayOfMonth(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.set(Calendar.DAY_OF_MONTH, 1);
        return startOfDay(calendar.getTime());
    }

    public static Date startOfDay(Date datum) {
        if (datum == null) {
            return null;
        }
        Calendar cal = new GregorianCalendar();
        cal.setTime(datum);
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);

        return cal.getTime();
    }
}

Related

1. getFirstDayOfCurMonth()
2. getFirstDayOfCurrentMonth()
3. getFirstDayOfLastMonth()
4. getfirstDayOfMonth()
5. getFirstDayOfMonth(Calendar c)
6. getFirstDayOfMonth(Date date)
7. getFirstDayOfMonth(Date date)
8. getFirstDayOfMonth(Date date)
9. getFirstDayOfMonth(Date date)