Java List Merge merge(final List aList, final List bList)

Description

merge

License

Open Source License

Declaration

public static <T> List<T> merge(final List<T> aList, final List<T> bList) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2005-2011 eBay Inc./*from  w  w  w . ja  v a 2 s  .  c om*/
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 *******************************************************************************/

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class Main {
    public static <T> List<T> merge(final List<T> aList, final List<T> bList) {

        if (aList == null && bList == null) {
            return Collections.emptyList();
        }

        if (aList != null && bList == null) {
            return Collections.unmodifiableList(aList);
        }

        if (aList == null && bList != null) {
            return Collections.unmodifiableList(bList);
        }

        ArrayList<T> list = new ArrayList<T>();
        list.addAll(aList);
        for (T t : bList) {
            if (!list.contains(t)) {
                list.add(t);
            }
        }

        return list;
    }

    public static <T> void add(final List<T> toList, final List<T> fromList) {

        if (toList == null || fromList == null) {
            return;
        }

        for (T t : fromList) {
            if (!toList.contains(t)) {
                toList.add(t);
            }
        }
    }
}

Related

1. getMergeindexes(List spans, List indexes)
2. mapMergeAdd(Map> map, Map> mapToAdd)
3. merge(final List> listOfLists)
4. merge(final List list, final String seperator)
5. merge(final List a, final List b)
6. merge(final String[] input, final String[] list)
7. merge(List original, List merger)
8. merge(List bs)
9. merge(List left, List right)