Java Day End isSameDay(Calendar cal1, Calendar cal2)

Description

Checks if two calendar objects are on the same day ignoring time.

28 Mar 2002 13:45 and 28 Mar 2002 06:01 would return true.

License

Open Source License

Parameter

Parameter	Description
cal1	the first calendar, not altered, not null
cal2	the second calendar, not altered, not null

Exception

Parameter	Description
IllegalArgumentException	if either calendar is <code>null</code>

Return

true if they represent the same day

Declaration

public static boolean isSameDay(Calendar cal1, Calendar cal2) 

Method Source Code

//package com.java2s;
/*/*from  w ww.  j a v a  2  s  .c o m*/
 * Copyright (c) 2007-2016 AREasy Runtime
 *
 * This library, AREasy Runtime and API for BMC Remedy AR System, is free software ("Licensed 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;
 * including but not limited to, the implied warranty of MERCHANTABILITY, NONINFRINGEMENT,
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
 */

import java.util.*;

public class Main {
    /**
     * <p>Checks if two date objects are on the same day ignoring time.</p>
     * <p/>
     * <p>28 Mar 2002 13:45 and 28 Mar 2002 06:01 would return true.
     * 28 Mar 2002 13:45 and 12 Mar 2002 13:45 would return false.
     * </p>
     *
     * @param date1 the first date, not altered, not null
     * @param date2 the second date, not altered, not null
     * @return true if they represent the same day
     * @throws IllegalArgumentException if either date is <code>null</code>
     */
    public static boolean isSameDay(Date date1, Date date2) {
        if (date1 == null || date2 == null)
            throw new IllegalArgumentException("The date must not be null");

        Calendar cal1 = Calendar.getInstance();
        cal1.setTime(date1);
        Calendar cal2 = Calendar.getInstance();
        cal2.setTime(date2);

        return isSameDay(cal1, cal2);
    }

    /**
     * <p>Checks if two calendar objects are on the same day ignoring time.</p>
     * <p/>
     * <p>28 Mar 2002 13:45 and 28 Mar 2002 06:01 would return true.
     * 28 Mar 2002 13:45 and 12 Mar 2002 13:45 would return false.
     * </p>
     *
     * @param cal1 the first calendar, not altered, not null
     * @param cal2 the second calendar, not altered, not null
     * @return true if they represent the same day
     * @throws IllegalArgumentException if either calendar is <code>null</code>
     */
    public static boolean isSameDay(Calendar cal1, Calendar cal2) {
        if (cal1 == null || cal2 == null)
            throw new IllegalArgumentException("The date must not be null");

        return (cal1.get(Calendar.ERA) == cal2.get(Calendar.ERA)
                && cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR)
                && cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR));
    }
}

Related

1. isIncludeDay(Date start, Date end, Date target)
2. isInRange(Date myDate, Date dateStart, Date dateEnd)
3. isInWorkDay(Calendar start)
4. isMoreThenMonth(Date startDate, Date enDate)
5. isNowBetween(Date start, Date end)
6. isSameDay(final Calendar calendar1, final Calendar calendar2)
7. isTodayWithinPeriod(Date periodStart, Date periodEnd)
8. isValidSendDate(Date sendDate)
9. isWorkingDay(final Calendar calendar, final Long[] holidays)