Introduction - If you have any usage issues, please Google them yourself
Between server and client through the socket Socket (TCP) connection. In java using sockets is quite simple, Java API for handling the communication socket to provide a class java.net.Socket., To make writing Web applications easier. Server uses multiple threads to meet the multi-user s request, and back through the JDBC database connection, and by creating a ServerSocket object to listen for connection requests from clients, the default port is 8080, then an infinite loop calling accept () method to accept client program link