how to display chat window in both source and destination machine

hi all,

i am doing chat project using udp socket programming. now i want to know that ,how to display the same chat window in our machine and destination machine(who are all in online). pls help me...

Read through the programing at the end of this website and you should be able to piece together some code from what this guy did

I cant post links but if you Google
socket chat java .pdf ibm.com/developerWorks
it should be the first link