How to solve page flickering in a jsp page for chat

Hi,
I'm trying to build a very simple chat application. I'm using JSP as the frontend. The problem is that when I want to refresh the messages typed and list of users currently logged in, the page is refreshing using html refresh tag. The result is very bad to the eye since the page flicker. Is there a way to solve this without using Applet ?
Thanks,
Ron

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