how can a server socket send a reply to a group of clients..?

hello,

i'm new to sever/client programming.. and i have to do a small assignment in the lab..
i have sent a message from client to server and server have been replyed using socket/serversocket classes.
how can i let the server to reply for a group of machines not only who sent the message..

i'll be thankable if you write me examples of methods and classes i can use..

moayyadAsked:
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objectsCommented:
Kepp a list of connected client, and when you recieve a message loop thru the list sending message to each client

see the broadcast() method in the following article for an example

http://www.javaworld.com/javaworld/jw-01-1997/jw-01-chat-p2.html
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moayyadAuthor Commented:
thanx for answer.
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