Java List Value Add addElementIfAbsent(List l, T element)

Description

Adds element as the last element of the List, if not already present within the List.

License

Apache License

Parameter

Parameter	Description
l	the List to add to
element	the element to add

Declaration

public static <T> void addElementIfAbsent(List<T> l, T element) 

Method Source Code

//package com.java2s;
/*/*  w ww .j a va2s  .c o m*/
Copyright 1996-2010 Ariba, Inc.
    
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.
    
$Id: //ariba/platform/util/core/ariba/util/core/ListUtil.java#38 $
*/

import java.util.List;

public class Main {
    /**
    Adds <b>element</b> as the last element of the List, if not
    already present within the List.
        
    @param l the List to add to
    @param element the element to add
    @exception NullPointerException if <b>element</b> is <b>null</b>.
    @aribaapi documented
    */
    public static <T> void addElementIfAbsent(List<T> l, T element) {
        if (!l.contains(element)) {
            l.add(element);
        }
    }
}

Related

1. add(List list, int i, T v)
2. add(List list, T element)
3. add(Map> multiValueMap, String key, Object value)
4. add(Object o, List oldList)
5. addElement(T element, List list)
6. addElements(boolean removeDuplicates, final List result, Collection elements)
7. addElements(List list, T[] array)
8. addElementsIfAbsent(List destList, Collection aColl)
9. appendToList(List list, A elem)