Java Collection Contain containsAnyNull(Collection source)

Description

contains Any Null

License

BSD License

Parameter

Parameter	Description
source	The Collection in which all elements are checked.

Return

true if the source collection contains any null element.

Declaration

public static boolean containsAnyNull(Collection<?> source) 

Method Source Code

//package com.java2s;
/*//from www .  j a v  a  2s .  c  o m
 * [The "BSD licence"]
 * Copyright (c) 2013-2015 Dandelion
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * 3. Neither the name of Dandelion nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import java.util.Collection;

public class Main {
    /**
     * @return {@code true} if the source collection contains any null element.
     * @param source
     *           The {@link Collection} in which all elements are checked.
     */
    public static boolean containsAnyNull(Collection<?> source) {
        if (source == null || source.isEmpty()) {
            return true;
        }
        for (Object o : source) {
            if (o == null) {
                return true;
            }
        }
        return false;
    }
}

Related

1. containsAny(final Collection coll1, final Collection coll2)
2. containsAny(final Collection collection, final Object... items)
3. containsAny(final Collection collection1, final Collection collection2)
4. containsAny(final Collection a, final Collection b)
5. containsAnyIgnoreCase(String string, Collection searchStrings)
6. containsAnyOf(String s, Collection values)
7. containsAnyVariables(Collection propertyValues)
8. containsAssignableClass( Collection> clses, Class clazz)
9. containsAtLeastOne(Collection origin, Collection elements)