public static  void dump(byte[] data,
    long offset,
    OutputStream stream,
    int index) throws IllegalArgumentException, IOException, ArrayIndexOutOfBoundsException 
{
        if ((index <  0) || (index  >= data.length))
        {
            throw new ArrayIndexOutOfBoundsException(
                "illegal index: " + index + " into array of length "
                + data.length);
        }
        if (stream == null)
        {
            throw new IllegalArgumentException("cannot write to nullstream");
        }
        long         display_offset = offset + index;
        StringBuffer buffer         = new StringBuffer(74);
        for (int j = index; j <  data.length; j += 16)
        {
            int chars_read = data.length - j;
            if (chars_read  > 16)
            {
                chars_read = 16;
            }
            buffer.append(dump(display_offset)).append(' ");
            for (int k = 0; k <  16; k++)
            {
                if (k <  chars_read)
                {
                    buffer.append(dump(data[ k + j ]));
                }
                else
                {
                    buffer.append("  ");
                }
                buffer.append(' ");
            }
            for (int k = 0; k <  chars_read; k++)
            {
                if ((data[ k + j ]  >= ' ") && (data[ k + j ] <  127))
                {
                    buffer.append(( char ) data[ k + j ]);
                }
                else
                {
                    buffer.append('.");
                }
            }
            buffer.append(EOL);
            stream.write(buffer.toString().getBytes());
            stream.flush();
            buffer.setLength(0);
            display_offset += chars_read;
        }
}

dump an array of bytes to an OutputStream