Java - Enviar ulong desde c++ a java y de java a c++, ayuda

//ENVIAR

                        ULONG NUMERO=123456789;

			long int NetInt;

			 NetInt = htonl((unsigned)NUMERO);

                         send(s2, (char *)&NetInt, sizeof(long), 0);

//RECIVIR

                        ULONG RECIVIDO= NULL;

                        recv(s2,(char*)&RECIVIDO,sizeof(long),0);

			long int NUMERORECIVIDO= ntohl(RECIVIDO);

//RECIVIR

                                InStream = new DataInputStream(Socket.getInputStream());

                                NUMERORECIVIDO= InStream.readInt();

//ENVIAR

outStream= new DataOutputStream(Socket.getOutputStream());

					outStream.writeInt(123456789);