Fourth lab

This lab is about iterative (aka sequential) TCP servers. You will learn how you can create server using SeverSocket class and what the basic structure of a sequential server is.

Iterative servers are those that only handle one client at a time (a bit like a shop attendendant). If two (or more) clients connect to the same server, only one will be serviced while the remaining clients wait for the former to be serviced. Once the server finishes serving one client, it will proceed with the next one.