I am quite Beginner and have no experience with network programming at all. So I did some of oracles tutorials on Socket Programming and it all works fine,
I basically can run an little mini server app locally and a client also. Now the big question: Where, how, how quick, how easy and how expensive is it to put this Java server app on some (free) host, so that it gets a port there for this app?
Google brought me lot about servlets and other stuff that I dont understand.