Java List Merge merge(List a, List b)

Description

merge

License

Open Source License

Declaration

public static <T> ArrayList<T> merge(List<T> a, List<T> b) 

Method Source Code

//package com.java2s;
/*//ww w . j  a  v a 2  s . co  m
 * Hello Minecraft!.
 * Copyright (C) 2013  huangyuhui <huanghongxun2008@126.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.ArrayList;

import java.util.List;

public class Main {
    public static <T> ArrayList<T> merge(List<T> a, List<T> b) {
        if (a == null && b == null)
            return null;
        else if (a == null)
            return new ArrayList<>(b);
        else if (b == null)
            return new ArrayList<>(a);
        ArrayList<T> al = new ArrayList<>(a.size() + b.size());
        al.addAll(a);
        al.addAll(b);
        return al;
    }
}

Related

1. merge(List l1, List l2)
2. merge(List list)
3. merge(List lst1, List lst2)
4. merge(List stringList)
5. merge(List text)
6. merge(List a, List b, Comparator comp)
7. merge(List list)
8. merge(List list, int split)
9. merge(List list, List items)