Java Collection to Array toArrayInt(Collection integerCollection)

Description

Returns the values of a Integer Collection as array.

License

Apache License

Parameter

Parameter	Description
integerCollection	a parameter

Declaration

public static int[] toArrayInt(Collection<Integer> integerCollection) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright 2011 Danny Kunz/*from   w  w w.ja va2 s  .  c om*/
 * 
 * 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 {
    /**
     * Returns the values of a {@link Integer} {@link Collection} as array.
     * 
     * @param integerCollection
     * @return
     */
    public static int[] toArrayInt(Collection<Integer> integerCollection) {
        //
        int[] retvals = new int[integerCollection.size()];

        //
        int ii = 0;
        for (Integer iValue : integerCollection) {
            retvals[ii++] = iValue;
        }

        //
        return retvals;
    }
}

Related

1. toArray(final Collection coll, byte[] array)
2. toArray(final Collection collection)
3. toArray(final Collection collection)
4. toArray(java.util.Collection collection)
5. toArray(T arrayOrCollection)
6. toArrays(Collection strings)
7. toArrayString(Collection col, boolean spacing)
8. toBaseTypedCollection(Collection initial)
9. toByteArray(Collection c)