Java programming method example of UDP network communication

This paper describes the method of UDP network communication by Java programming. Share with you for your reference, as follows:

The full name of UDP protocol is user datagram protocol. In the network, it is used to process packets like TCP protocol. It is a connectionless protocol.

In the OSI model, the transport layer, the fourth layer, is the upper layer of the IP protocol. UDP does not provide packet Grouping, assembly and sorting:

In other words, after the message is sent, it is impossible to know whether it arrives safely and completely. UDP is used to support network applications that need to transfer data between computers.

If UDP protocol is adopted, the data shall be defined as a datagram, and the socket to be reached by the data shall be indicated in the datagram before data transmission.

Two classes are mainly involved:

Datagram packet: datagram packet class datagram socket: Data end-to-end communication class

UDP server of simple demo:

UDP client for simple demo:

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