What is web messaging?

Question

how can we message through web.
explain.
post a small example..

Answer 1

generally you can use sockets to exchange messages over "web", the exchanging of messages happens using TCP/IP or UDP/IP protocols via the Client/Server paradigm. an example of a simple java TCP server who receive and send a message is

https://code.sololearn.com/cUQNKav3AyCu/?ref=app

to make it works you should write a client program (search for Java TCP client serverr).