Get bytes out of a ByteBuffer, moves the buffer position to where the bytes finished - Java java.nio

Java examples for java.nio:ByteBuffer

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Description

Get bytes out of a ByteBuffer, moves the buffer position to where the bytes finished

Demo Code

/*/*from   w  ww . ja v  a 2 s.  co  m*/
 * Copyright (c) 2013 Ramon Servadei 
 *  
 * 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.
 */
//package com.java2s;
import java.nio.ByteBuffer;

public class Main {
    /**
     * Get bytes out of a buffer, moves the buffer position to where the bytes finished
     * 
     * @param len
     *            the number of bytes to retrieve
     */
    public static final byte[] getBytesFromBuffer(ByteBuffer buffer, int len) {
        final int start = buffer.position();
        final byte[] bytes = new byte[len];
        System.arraycopy(buffer.array(), start, bytes, 0, len);
        buffer.position(start + len);
        return bytes;
    }
}

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