Java Collection to Array toArray(Collection bytes)

Description

Converts a Collection of Number to a byte array.

License

Apache License

Parameter

Parameter	Description
bytes	a Collection of Number

Return

byte array

Declaration

public static byte[] toArray(Collection<? extends Number> bytes) 

Method Source Code

//package com.java2s;
/**/*from   w w w. j  av  a  2s .  c o  m*/
 *
 * @author Wei-Ming Wu
 *
 *
 * Copyright 2013 Wei-Ming Wu
 *
 * 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;
import java.util.Iterator;

public class Main {
    /**
     * Converts a Collection of Number to a byte array.
     * 
     * @param bytes
     *          a Collection of Number
     * @return byte array
     */
    public static byte[] toArray(Collection<? extends Number> bytes) {
        byte[] array = new byte[bytes.size()];
        Iterator<? extends Number> iter = bytes.iterator();
        for (int i = 0; i < bytes.size(); i++) {
            array[i] = iter.next().byteValue();
        }
        return array;
    }
}

Related

1. convertToArray(Collection collection)
2. convertToArray(Collection input)
3. convertToArray(Collection items)
4. toArray(Collection c)
5. toArray(Collection coll)
6. toArray(Collection c, T[] arr)
7. toArray(Collection collection)
8. toArray(Collection tests)
9. toArray(Collection list)