Java Collection Add addIfMissing(Collection result, Iterable addition)

Description

add If Missing

License

Apache License

Declaration

private static <E> void addIfMissing(Collection<E> result,
            Iterable<E> addition) 

Method Source Code

//package com.java2s;
/*//from w w  w .  j a  v  a  2s .  com
 * Copyright 2015 Alexandr Evstigneev
 *
 * 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.
 */

import java.util.*;

public class Main {
    private static <E> void addIfMissing(Collection<E> result,
            Iterable<E> addition) {
        if (addition == null) {
            return;
        }

        for (E e : addition) {
            if (!result.contains(e)) {
                result.add(e);
            }
        }
    }
}

Related

1. addDirToStringPaths(Collection ss, String dir)
2. added(Collection old, Collection nu)
3. added(Collection a, Collection b)
4. addIf(Collection coll, T value, boolean expr)
5. addIfAbsent(Collection c, T item)
6. addIfNotContains(Collection collection, T value)
7. addIfNotEmpty(Collection c, Collection elements)
8. addIfNotNull(Collection c, Object element)
9. addIfNotNull(Collection coll, T value)