Just as a general precaution, however, I don't recommend having the backing layer emit display elements (HTML). There are times when it's necessary and I'm presently working on an app that does so. But that's because the app uses an HTML editor to input and display data (rather like the one that JavaRanch uses for postings).
I've seen - and suffered with - a number of webapps that output table rows with tags in them and committed various other offenses. It tends to be a real pain, since sooner or later there always seems to arise a need for just the data without the HTML. And having the display come from 2 different layers (JSF and
Java code) can make both predicting output and finding what to change a real game of hide-and-seek.
So unless the HTML formatting is part of the backing data itself, I strongly urge that you put all the HTML (and CSS references) on the JSF pages, not in the backing beans.
Some people, when well-known sources tell them that fire will burn them, don't put their hands in the fire.
Some people, being skeptical, will put their hands in the fire, get burned, and learn not to put their hands in the fire.
And some people, believing that they know better than well-known sources, will claim it's a lie, put their hands in the fire, and continue to scream it's a lie even as their hands burn down to charred stumps.
