The applet is installed on the local hard disk, in a directory on the CLASSPATH used by the program that you are using to run the applet. Usually, this is a Java-enabled browser, but it could be the ...
I wrote a pair of apps, one a server and one a client, and they were free-standing java programs. They work seamlessly, only now we want to run the client from behind a firewall, and it's not working.