Java Collection Equal areEqual(Collection collection1, Collection collection2)

Description

are Equal

License

Open Source License

Declaration

public static boolean areEqual(Collection<?> collection1, Collection<?> collection2) 

Method Source Code

//package com.java2s;
/*// w ww  .  j ava2s . c  om
 * The MIT License (MIT)
 *
 * Copyright (c) 2013 Brien L. Wheeler (brienwheeler@yahoo.com)
 *
 * 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.Collection;

public class Main {
    public static boolean areEqual(Collection<?> collection1, Collection<?> collection2) {
        if (collection1 == null && collection2 == null)
            return true;
        if (collection1 == null || collection2 == null)
            return false;
        if (collection1.size() != collection2.size())
            return false;
        for (Object member : collection1) {
            if (!collection2.contains(member))
                return false;
        }
        return true;
    }
}

Related

1. allEqual(Class[] collection, Class cls)
2. allEqual(final Class[] collection, final Class cls)
3. areEqual(Collection collection1, Collection collection2)
4. compareTwoCollectionsEquality(Collection expectedAffectedFiles, Collection affectedFiles)
5. containsAtleastOneEqualString(Collection left, String right)
6. containsByEquals(Collection collection, Object obj)
7. content_equality(Collection A, Collection B)