where to install jar files on openjdk6?

[Graham Menhennitt]

G'day all,

I'm trying to run a Java based web app in Firefox on FreeBSD 8-stable 
using the OpenJDK6 port. The app uses a number of JAR files and I don't 
know where to install them. Under Linux running sun-java6-jre, the same 
files would get stored into /usr/java/packages/lib/ext and 
/usr/lib/jvm/java-6-sun/jre/lib/security. Could somebody please tell me 
what the equivalent locations are?

Thanks in advance for your help,
     Graham