What versions of Tomcat and Java work on FreeBSD

[lrnobs]

I had a jsp web application written for me which was setup on RedHat9.

I would like to move this onto FreeBSD or OpenBSD if possible.

The Tomcat version used was 4.1 and the Java SDK used was Java 2 SDK
Standard Edition 1.4.2

Will these versions run on FreeBSD 4.8, 4.9, or 5.2 or do I have to stay
with Linux without a rewrite.

If it will run, are there big changes in file paths, etc.?

I currently have 4.8 but could of course get newer stuff.

Thanks,

Larry Nobs