Java List Create asList(E... elements)

Description

as List

License

Apache License

Declaration

public static <E> List<E> asList(E... elements) 

Method Source Code

//package com.java2s;
/*/*from www .  ja va 2  s  .com*/
 * Copyright 2014 Stormpath, Inc.
 *
 * 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.*;

public class Main {
    public static <E> List<E> asList(E... elements) {
        if (elements == null || elements.length == 0) {
            return Collections.emptyList();
        }
        // Avoid integer overflow when a large array is passed in
        int capacity = computeListCapacity(elements.length);
        ArrayList<E> list = new ArrayList<E>(capacity);
        Collections.addAll(list, elements);
        return list;
    }

    static int computeListCapacity(int arraySize) {
        return (int) Math.min(5L + arraySize + (arraySize / 10), Integer.MAX_VALUE);
    }
}

Related

1. asList(Collection items)
2. asList(E[] array)
3. asList(final int... values)
4. asList(final Iterator data)
5. asList(int[] a)