Java Calendar Compare minimum(Calendar... calendars)

Description

Returns the smallest datetime from the given list.

License

Open Source License

Parameter

Parameter	Description
calendars	The list of datetimes to find the minimum in.

Return

The minimum datetime in the given list.

Declaration

public static Calendar minimum(Calendar... calendars) 

Method Source Code

//package com.java2s;
/*//from www .  jav  a2 s .  c om
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 Lachlan Dowding
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import java.util.Arrays;
import java.util.Calendar;
import java.util.Collection;

import java.util.SortedSet;

import java.util.TreeSet;

public class Main {
    /**
     * Returns the smallest datetime from the given list.
     *
     * @param calendars The list of datetimes to find the minimum in.
     * @return The minimum datetime in the given list.
     */
    public static Calendar minimum(Calendar... calendars) {
        if (calendars == null || calendars.length == 0)
            return null;
        return minimum(Arrays.asList(calendars));
    }

    /**
     * Returns the smallest datetime from the given list.
     *
     * @param calendars The list of datetimes to find the minimum in.
     * @return The minimum datetime in the given list.
     */
    public static Calendar minimum(Collection<Calendar> calendars) {
        if (calendars == null || calendars.size() == 0)
            return null;
        SortedSet<Calendar> set = new TreeSet<Calendar>(calendars);
        return set.first();
    }
}

Related

1. isSameInstant(final Calendar cal1, final Calendar cal2)
2. max(Calendar cal1, Calendar cal2)
3. min(Calendar c1, Calendar c2)
4. min(final Calendar... calendars)
5. minCalendars(List calendars)