Gets the start of the day based on the given Calendar . - Java java.util

Java examples for java.util:Day

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Description

Gets the start of the day based on the given Calendar .

Demo Code

/*/* ww w .  j av a  2s.  c o  m*/
 *  Copyright (C) 2010 - 2014 Converge Consulting Limited
 * 
 *  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/>.
 */
//package com.java2s;
import java.util.Calendar;
import java.util.Date;

public class Main {
    public static void main(String[] argv) throws Exception {
        Calendar c = Calendar.getInstance();
        System.out.println(getStartOfDay(c));
    }

    /**
     * Gets the start of the day based on the given {@link Calendar}.
     *
     * @param c Calendar for which to get the start of the day
     * @return The start of the day for the given {@link Calendar}
     */
    public static Calendar getStartOfDay(Calendar c) {
        Calendar result = (Calendar) c.clone();
        result.set(Calendar.HOUR_OF_DAY, 0);
        result.set(Calendar.MINUTE, 0);
        result.set(Calendar.SECOND, 0);
        result.set(Calendar.MILLISECOND, 0);
        return result;
    }

    /**
     * Gets the start of the day based on the given {@link Date}.
     *
     * @param d Date for which to get the start of the day
     * @return The start of the day for the given {@link Date}
     */
    public static Calendar getStartOfDay(Date d) {
        Calendar c = Calendar.getInstance();
        c.setTime(d);
        return getStartOfDay(c);
    }
}

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