Java ByteBuffer Copy copyBytes(ByteBuffer bytes)

Description

Extract the bytes in the given ByteBuffer and return it as a byte[] without affecting the mark, position, or limit of the given buffer.

License

Apache License

Parameter

Parameter	Description
bytes	ByteBuffer.

Return

Contents between 'position' and 'limit' (aka 'remaining') as a byte[]. Parameter object is unaffected.

Declaration

public static byte[] copyBytes(ByteBuffer bytes)

Method Source Code

//package com.java2s;
/*// w w  w  .  jav  a 2 s . com
 * Copyright (C) 2014 Dell, 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.nio.ByteBuffer;

public class Main {
    /**
     * Extract the bytes in the given ByteBuffer and return it as a byte[] without
     * affecting the mark, position, or limit of the given buffer. This method should be
     * used instead of {@link #getBytes(ByteBuffer)} when the ByteBuffer might be re-read
     * again.
     *
     * @param   bytes   ByteBuffer.
     * @return          Contents between 'position' and 'limit' (aka 'remaining') as a
     *                  byte[]. Parameter object is unaffected.
     */
    public static byte[] copyBytes(ByteBuffer bytes) {
        ByteBuffer copy = bytes.duplicate();
        byte[] result = new byte[copy.remaining()]; // bytes between position and limit
        copy.get(result);
        return result;
    }
}