Java Collection to Array toIntArray(Collection list)

Description

to Int Array

License

Apache License

Declaration

public static int[] toIntArray(Collection<Integer> list) 

Method Source Code

//package com.java2s;
/*/*from w w  w . ja va 2  s. co  m*/
 * Copyright 2009 ZXing authors
 *
 * 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.Collection;

public class Main {
    private static final int[] EMPTY_INT_ARRAY = {};

    public static int[] toIntArray(Collection<Integer> list) {
        if (list == null || list.isEmpty()) {
            return EMPTY_INT_ARRAY;
        }
        int[] result = new int[list.size()];
        int i = 0;
        for (Integer integer : list) {
            result[i++] = integer;
        }
        return result;
    }
}

Related

1. toIntArray(Collection collection)
2. toIntArray(Collection collection)
3. toIntArray(Collection collection)
4. toIntArray(Collection collection)
5. toIntArray(Collection ints)
6. toIntArray(Collection list)
7. toIntArray(Collection values)
8. toIntArray(final Collection c)
9. toIntArray(final Collection col)