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thank you for responding.

so, i have to use serversocket + socket to establish a server client thing.
then use the thread thing to make it server- multi-client thing.

something like that?
...

how do i setup a server-multiple-client environment?
i want to make a chatroom using LAN.

I am confused with sockets and multicasts classes.
i dont know which one to use.

I also have just started learning java.
right now i only know the basics: variabes, classes, and such..
i want to do some practice exercise so i can familiarize myself with the usage of the...