No matter how many times I refreshed the java version detector page I couldn't get chrome to realize that Java was installed (after I'd just updated it). I also tried disabling Adblock plus on the java domain and I knew that Java was enabled in chrome. Restarting the browser did the trick. Everything is okay, but I would like to know why this fixed it, please.* For the record, I am keeping an older version of Java (version 6) around because I need to run some really really old apps.

* it makes me uncomfortable to think that computers/software are magical in some way.