Java Collection Concatenate concat(final Collection... collections)

Description

concat

License

Open Source License

Declaration

@SafeVarargs
public static <T> List<T> concat(final Collection<T>... collections) 

Method Source Code

//package com.java2s;
/*//ww w  . jav  a 2s  .  c  om
 * #%L
 * Sigmah
 * %%
 * Copyright (C) 2010 - 2016 URD
 * %%
 * 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/gpl-3.0.html>.
 * #L%
 */

import java.util.ArrayList;

import java.util.Collection;

import java.util.List;

public class Main {

    @SafeVarargs
    public static <T> List<T> concat(final Collection<T>... collections) {

        final List<T> concatenation = new ArrayList<T>();

        for (final Collection<T> collection : collections) {
            if (collection != null) {
                concatenation.addAll(collection);
            }
        }

        return concatenation;
    }
}

Related

1. concat(Collection a, Collection b)
2. concat(Collection a, int offset, String sep, String start, String end)
3. concat(Collection first, Collection second)
4. concat(Collection... collections)
5. concat(final Collection... collections)
6. concat(String separator, Collection args)
7. concat(String[] first, Collection second)
8. concatCollection(Collection collection)
9. concatElements(final Collection c, final String separator)