From what I read in these articles, the answer seems to be no.  For
code to reference that applet's methods and data, it must be an applet
that originates from the same server and directory.

Sun Tutorial:
"Sending Messages to Other Applets"
http://web2.java.sun.com/docs/books/tutorial/applet/appletsonly/iac.html

Java Tip 101:
"An alternative way for applet-to-applet communication"
http://www.javaworld.com/javaworld/javatips/jw-javatip101.html

Another issue that you should consider is license to use the data.
Financial quotes are often not free, and you should make sure you have
permission to use the data from a quote service before skimming it for
your own purposes.  Also, I note on the page you cite above that the
data in that applet is for informational purposes, and may not be accurate.

Regards,
Bill K.

Tools like WinRunner do it.  I believe they plug in their own JVM with
the appropriate hooks.

John
http://schemaspy.sourceforge.net

First, make sure you are not infringing any copyright or other
intellectual property.

Assuming that you have done so: You should be able to run applets in
your own application, with a dummy AppletContext. Then get it to paint
its data to your own Graphics object. Typically the text data will be
sent through drawString. Or perhaps you can read it off a Label. That
applet in particular is naughty in using Netscape classes (which
Microsoft copied).

Tom Hawtin