Java Array to ArrayList toArrayList(Collection collection)

Description

to Array List

License

Apache License

Declaration

public static <T> ArrayList<T> toArrayList(Collection<T> collection) 

Method Source Code

//package com.java2s;
/*//from   ww  w  .ja  v  a  2 s.c  om
 * Copyright 2012 Evgeny Dolganov (evgenij.dolganov@gmail.com).
 *
 * 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.
 */

import java.util.ArrayList;
import java.util.Collection;

public class Main {
    public static <T> ArrayList<T> toArrayList(Collection<T> collection) {

        if (collection == null) {
            return null;
        }

        ArrayList<T> out = null;
        if (collection instanceof ArrayList<?>) {
            out = (ArrayList<T>) collection;
        } else {
            out = new ArrayList<T>(collection);
        }
        return out;
    }
}

Related

1. asArrayList(T[] tArray)
2. asArrayList(T[] values)
3. byteArrayToArrayList(byte[] byteArray)
4. byteArrayToShortArrayList(byte[] byteArray)
5. toArrayList( Iterable iterable)
6. toArrayList(Collection from)
7. toArrayList(double[] dd)
8. toArrayList(final T... array)
9. toArrayList(int[] p)