Java List Copy copyToArrayListWithExtraCapacity(T[] elements, int extraCapacity)

Description

Produces an ArrayList for an array of elements where the list is pre-sized with extra capacity.

License

Open Source License

Declaration

public static <T> List<T> copyToArrayListWithExtraCapacity(T[] elements, int extraCapacity) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright 2011 Google Inc. All Rights Reserved.
 *
 * 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
 *
 * 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.//ww  w.j  ava  2  s  .  co m
 *******************************************************************************/

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class Main {
    /**
     * Produces an ArrayList for an array of elements where the list is pre-sized
     * with extra capacity. The extra capacity does not change the size of the
     * list, but does change the initial capacity of the list, thus making adds
     * more efficient if the ultimate size can be estimated.
     */
    public static <T> List<T> copyToArrayListWithExtraCapacity(T[] elements, int extraCapacity) {
        List<T> asList;
        if (elements != null) {
            asList = new ArrayList<T>(elements.length + extraCapacity);
            asList.addAll(Arrays.asList(elements));
        } else {
            asList = new ArrayList<T>(extraCapacity);
        }
        return asList;
    }
}

Related

1. copyQueryFilters(List queryFilters)
2. copySafelyToObjectList(java.util.List list)
3. copyStringList(List l1)
4. copyStringList(List list)
5. copyToArray(List list, float[] array)
6. copyToList(Iterable elements)
7. copyTypes(List src, List dest)