Are two collection have same Content - Java java.util

Java examples for java.util:Collection Operation

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Description

Are two collection have same Content

Demo Code

/*//from   w ww  .j a v a 2  s . com
 * ObjectLab, http://www.objectlab.co.uk/open is sponsoring the ObjectLab Kit.
 *
 * Based in London, we are world leaders in the design and development
 * of bespoke applications for the securities financing markets.
 *
 * <a href="http://www.objectlab.co.uk/open">Click here to learn more</a>
 *           ___  _     _           _   _          _
 *          / _ \| |__ (_) ___  ___| |_| |    __ _| |__
 *         | | | | '_ \| |/ _ \/ __| __| |   / _` | '_ \
 *         | |_| | |_) | |  __/ (__| |_| |__| (_| | |_) |
 *          \___/|_.__// |\___|\___|\__|_____\__,_|_.__/
 *                   |__/
 *
 *                     www.ObjectLab.co.uk
 *
 * $Id: AbstractDateCalculator.java 309 2010-03-23 21:01:49Z marchy $
 *
 * Copyright 2006 the original author or authors.
 *
 * Licensed under the Apache 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.apache.org/licenses/LICENSE-2.0
 *
 * 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.
 */
//package com.java2s;
import java.util.Collection;

public class Main {
    public static void main(String[] argv) {
        Collection c1 = java.util.Arrays.asList("asdf", "java2s.com");
        Collection c2 = java.util.Arrays.asList("asdf", "java2s.com");
        System.out.println(sameContent(c1, c2));
    }

    public static boolean sameContent(final Collection<?> c1,
            final Collection<?> c2) {
        if (c1 == c2 || isEmpty(c2) && isEmpty(c1)) {
            return true;
        }
        boolean same = false;
        if (c1 != null && c2 != null) {
            same = c1.size() == c2.size();
            if (same) {
                same = c1.equals(c2);
            }
        }
        return same;
    }

    /**
     * @return true if collection null or empty.
     */
    public static boolean isEmpty(final Collection<?> col) {
        return col == null || col.isEmpty();
    }

    /**
     * @return size of collection if not null, otherwise 0.
     */
    public static int size(final Collection<?> col) {
        return col != null ? col.size() : 0;
    }
}

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