Java ByteBuffer to Byte Array toByteArray(ByteBuffer buffer, int length)

Description

Returns an array (that shouldn't be written to!) of the ByteBuffer.

License

Apache License

Declaration

public static byte[] toByteArray(ByteBuffer buffer, int length) 

Method Source Code

//package com.java2s;
/* NOTICE: This file has been changed by Plutext Pty Ltd for use in docx4j.
 * The package name has been changed; there may also be other changes.
 * /*w w  w. jav a2 s .c  om*/
 * This notice is included to meet the condition in clause 4(b) of the License. 
 */

import java.io.ByteArrayOutputStream;

import java.io.IOException;
import java.io.InputStream;

import java.nio.ByteBuffer;

public class Main {
    /**
     * Reads all the data from the input stream, and returns the bytes read.
     */
    public static byte[] toByteArray(InputStream stream) throws IOException {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();

        byte[] buffer = new byte[4096];
        int read = 0;
        while (read != -1) {
            read = stream.read(buffer);
            if (read > 0) {
                baos.write(buffer, 0, read);
            }
        }

        return baos.toByteArray();
    }

    /**
     * Returns an array (that shouldn't be written to!) of the
     *  ByteBuffer. Will be of the requested length, or possibly
     *  longer if that's easier.
     */
    public static byte[] toByteArray(ByteBuffer buffer, int length) {
        if (buffer.hasArray() && buffer.arrayOffset() == 0) {
            // The backing array should work out fine for us
            return buffer.array();
        }

        byte[] data = new byte[length];
        buffer.get(data);
        return data;
    }
}

Related

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