Document root of a JSP page?

From: D. Alvarado (laredotornado_at_zipmail.com)
Date: 06/30/04 

Date: 30 Jun 2004 06:56:54 -0700

Hello,
   What is the most efficient way to get my public HTML document root
path? That is, I know the base directory for serving web pages is

/usr/local/public/html

but I wish to determine this information in my JSP page and store it
to a variable. I'm using Weblogic 5.1 on Solaris 8 with Apache 1.3.27
web server.

Thanks in advance, - Dave