It is a wire level protocol running at the level under Remote Method Invocation (RMI) and over TCP/IP.
Java | Java (programming language) | West Java | Central Java | East Java | Transmission Control Protocol | File Transfer Protocol | Session Initiation Protocol | User Datagram Protocol | Java (island) | BitTorrent (protocol) | Kyoto Protocol | Internet Protocol | Post Office Protocol | Program and System Information Protocol | Simple Network Management Protocol | Internet Message Access Protocol | Newton's method | Network File System (protocol) | Monte Carlo method | Hypertext Transfer Protocol | The Crystal Method | Lightweight Directory Access Protocol | Wii Remote | Secure Real-time Transport Protocol | Real-time Transport Protocol | Simple Mail Transfer Protocol | Montreal Protocol | Communications protocol | Wireless Application Protocol |