Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/**
 * Copyright 2005-2015 The Kuali Foundation
 *
 * Licensed under the Educational Community License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.opensource.org/licenses/ecl2.php
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.Collection;

public class Main {
    /**
     * Performs a "brute force" comparison of collections by testing whether the collections contain
     * each other. This circumvents any particular uniqueness or ordering constraints on the
     * collections (for instance, lists that are unordered but contain the same elements, where a
     * hashset would not suffice for comparison purposes because it enforces element uniqueness)
     */
    public static boolean collectionsEquivalent(Collection<?> a, Collection<?> b) {
        if (a == null && b == null) {
            return true;
        }
        if (a == null ^ b == null) {
            return false;
        }
        return a.containsAll(b) && b.containsAll(a);
    }
}