I don't recommend Java for any Mac user
unless they have a real need. There are some apps that actually use Java and, if you run a business that requires that kind of app, the question is moot. I used to have a financial/bookkeeping app that used Java, but it has been years since I replaced it. OTOH, I still have Java installed, for old time's sake!
Oracle bought the Java group many years ago and the do a fine job of supporting it. If I had the choice between FB or Java, I'd probably decide on latter. I did re-join FB a couple of weeks ago and have been sorry for it nearly ever day. I wanted to join a private group and never go anywhere else there, but I'm thinking of cutting a piece is card stock to cover the majority of the browser window so I don't have to see all the other junk.
I've never had any problems attributable to Java and updating it is very easy. I hope it works well for your needs with that group.
Really? You don't remember when Oracle thought it just ducky to package the Java updates with malware that installed browser "helpers" that redirected all your searches to Yahoo? If you were in a rush and just clicking through the install process, it was REALLY easy not to notice the checkbox, already checked, that installed all that garbage. I think they've stopped doing that lately, but it left a really bad tasted in my mouth. I think we had to help a few people here get all that stuff uninstalled, too...
Anyway - I'm actually a little perturbed that there is any web forum/group out there that is still coded in such a way as to require Java enabled by end users. Please send me the link, Sooz - I want to have a look. Curiosity and all that...
I haven't come across a site that required it in eons - it's pretty much a no-no these days because of security issues.