static void channelCopy( ReadableByteChannel src, WriteableByteChannel dest ){

    ByteBuffer buffer = ByteBuffer.allocateDirect( 16 * 1024 );

    while( src.read(buffer) != -1 ){
        //Prepare the buffer to be drained
        buffer.flip();

        while(buffer.hasRemaining()){
            dest.write(buffer);
        }

        //Make the buffer empty, ready for filling.
        buffer.clear();

    }


}