Java Collection Copy copy(Collection args)

Description

Make a copy of the parameter.

License

Apache License

Parameter

Parameter	Description
args	the collection to be copied

Return

the result

Declaration

public static final <E> List<E> copy(Collection<E> args) 

Method Source Code

//package com.java2s;
/**// w ww .  j  ava 2s  .  c om
 * CollectionUtil.java
 *
 * Copyright 2012 Niolex, Inc.
 *
 * Niolex licenses this file to you 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.ArrayList;
import java.util.Collection;
import java.util.List;

public class Main {
    /**
     * Make a copy of the parameter.
     *
     * @param args the collection to be copied
     * @return the result
     */
    public static final <E> List<E> copy(Collection<E> args) {
        List<E> dest = new ArrayList<E>(args.size());
        dest.addAll(args);
        return dest;
    }

    /**
     * Add all the elements in args into collection.
     *
     * @param collection the collection used to add elements
     * @param args the elements to be added
     */
    public static final <E> void addAll(Collection<E> collection, E... args) {
        for (int i = 0; i < args.length; ++i) {
            collection.add(args[i]);
        }
    }
}

Related

1. copy(Collection collection)
2. copy(final Collection in)
3. copy(final Collection collection)
4. copy(final Collection collection)