Java Day Start startOfDayInMillis(long date)

Description

Returns day in millis with the hours, milliseconds, seconds and minutes set to 0.

License

Open Source License

Parameter

Parameter	Description
date	long used in calculating start of day

Return

Start of date

Declaration

public static long startOfDayInMillis(long date) 

Method Source Code

//package com.java2s;
/*/*  w w  w  .  ja  v  a2  s . c  o  m*/
 * $Id: DateUtils.java,v 1.4 2005/10/10 18:02:45 rbair Exp $
 *
 * Copyright 2004 Sun Microsystems, Inc., 4150 Network Circle,
 * Santa Clara, California 95054, U.S.A. All rights reserved.
 *
 * This library 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 library 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 library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

import java.util.Calendar;

public class Main {
    /**
     * Returns day in millis with the hours, milliseconds, seconds and minutes
     * set to 0.
     *
     * @param date long used in calculating start of day
     * @return Start of <code>date</code>
     */
    public static long startOfDayInMillis(long date) {
        Calendar calendar = Calendar.getInstance();
        synchronized (calendar) {
            calendar.setTimeInMillis(date);
            calendar.set(Calendar.HOUR_OF_DAY, 0);
            calendar.set(Calendar.MILLISECOND, 0);
            calendar.set(Calendar.SECOND, 0);
            calendar.set(Calendar.MINUTE, 0);
            return calendar.getTimeInMillis();
        }
    }
}

Related

1. startOfDay(Date dateInst)
2. startOfDay(Date inDate, TimeZone timeZone)
3. startOfDay(Date value)
4. startOfDay(final Date date)
5. startOfDay(final Date date)