Java List Contain containsExactly(Collection list, T... mustHaveItems)

Description

Checks if the collection contains exactly the given mustHaveItems.

License

Open Source License

Declaration

@SafeVarargs
public static <T> boolean containsExactly(Collection<T> list, T... mustHaveItems) 

Method Source Code

//package com.java2s;
/*/*  ww w .  j  av  a 2  s  .co  m*/
 * Syncany, www.syncany.org
 * Copyright (C) 2011-2015 Philipp C. Heckel <philipp.heckel@gmail.com> 
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

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

public class Main {
    /**
     * Checks if the collection contains exactly the given <tt>mustHaveItems</tt>. 
     * 
     * <p><b>Examples:</b><br>
     * <tt>containsOnly(Arrays.asList(new Integer[] { 1, 2, 3 }))          --> false</tt><br>
     * <tt>containsOnly(Arrays.asList(new Integer[] { 1, 2, 3 }), 1, 99)   --> false</tt><br>
     * <tt>containsOnly(Arrays.asList(new Integer[] { 1, 2, 3 }), 1, 2, 3) --> true</tt>
     */
    @SafeVarargs
    public static <T> boolean containsExactly(Collection<T> list, T... mustHaveItems) {
        return containsExactly(list, Arrays.asList(mustHaveItems));
    }

    /**
     * Checks if the collection contains exactly the given <tt>mustHaveItems</tt>.
     * 
     * <p><b>Examples:</b><br>
     * <tt>containsOnly(Arrays.asList(new Integer[] { 1, 2, 3 }), Arrays.asList(new Integer[] { }))         --> false</tt><br>
     * <tt>containsOnly(Arrays.asList(new Integer[] { 1, 2, 3 }), Arrays.asList(new Integer[] { 1, 99 }))   --> false</tt><br>
     * <tt>containsOnly(Arrays.asList(new Integer[] { 1, 2, 3 }), Arrays.asList(new Integer[] { 1, 2, 3 })) --> true</tt>
     */
    public static <T> boolean containsExactly(Collection<T> list, Collection<T> mustHaveItems) {
        return list.containsAll(mustHaveItems) && mustHaveItems.containsAll(list);
    }
}

Related

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2. containsColumnByAlias(List columns, String alias)
3. containsDuplicates(List list, Comparator comparator)
4. containsElement( List> list, List element)
5. containsEnchantment(String enchantments, List enchList)
6. containsExactly(List items, T... itemsToMatch)
7. containsExternalFilter(List filterList, String dataSetExtId, String dataSourceExtId)
8. containsFileName(String fileName, List filterList)
9. containsHelpRequest(List args)