If you are on a Windows machine, use a tar clone or WinZip. Several people have asked for the source code to TChat. It is available upon request. The main class for the TChat client applet is tchat.client.TChatClientApplet. You can look at the applet tag in this page as an example.
All parameters are optional.
By default, port 4321 is used. By default, the host from which the applet was loaded is used. Height of the applet window. The default is 300. The default is 300.