client server programming which supports both TCP and UDP

[Yafet Negussie]

Hi,
I'm very new for client server programming. I have a project which requires me to simulate client server programming which simulates multiple clients (at most 10) and a single server.
My question is ...
1. Is it possible to create one program that supports both client and server? I assume I have to do some sort of multithreading (I've been doing some reading). I would appreciate if someone gives me some guidance to start this program.

Thank you in advance
Yafet

[Tim Moores]

You should not mix the client and the server within the same code. They're separate when deployed, and should be so even in your example code. You can find an extensive tutorial about Java networking at http://docs.oracle.com/javase/tutorial/networking/index.html; the "All about Sockets" chapter has a pair of client/server codes that you can study. The "All About Datagrams" chapter talks about UDP.