Java ByteBuffer to Byte Array toBytes(ByteBuffer buffer)

Description

to Bytes

License

Apache License

Declaration

public static byte[] toBytes(ByteBuffer buffer) 

Method Source Code

//package com.java2s;
/*/* w w w  .j  a  va2  s .  c om*/
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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;

import java.util.Arrays;

public class Main {
    public static byte[] toBytes(ByteBuffer buffer) {
        if (buffer == null)
            return null;
        if (buffer.hasArray()) {
            // did not use buffer.get() because it changes the position
            return Arrays.copyOfRange(buffer.array(), buffer.position() + buffer.arrayOffset(),
                    buffer.limit() + buffer.arrayOffset());
        } else {
            byte[] data = new byte[buffer.remaining()];
            // duplicate inorder to avoid changing position
            buffer.duplicate().get(data);
            return data;
        }
    }
}

Related

1. toByteArray(ByteBuffer buffer, int length)
2. toByteArray(ByteBuffer bytes)
3. toByteArrayByByteBuffer(int value)
4. toBytes(ByteBuffer buff)
5. toBytes(ByteBuffer buffer)
6. toBytes(ByteBuffer buffer, int offset, int length)
7. toBytes(ByteBuffer buffer, int startPosition)
8. toBytes(ByteBuffer value)
9. toBytes(final ByteBuffer bb)