Convert between ByteBuffer and byte array

// Create a byte array byte[] bytes = new byte[10]; // Wrap a byte array into a buffer ByteBuffer buf = ByteBuffer.wrap(bytes); // Retrieve bytes between the position and limit // (see Putting Bytes into a ByteBuffer) bytes = new byte[buf.remaining()]; // transfer bytes from this buffer into the given destination array buf.get(bytes, 0, bytes.length); [...]