I am confused. Is Java available or not available for Mountain Lion (other than a 3rd party version). I'm not a huge fan of Java, but unfortunately WordPress plug-ins, and Facebook developer tools all use Java. I thought Apple removed it, but I just read a news report that there's an update available. If it's still available, how do I re-install it?
Apple has washed their hands of Java. They are still updating Java 6, which can be installed in systems all the way up to Mountain Lion. (Trying to open anything that requires Java should prompt you to install it.) Java 6 no longer includes a web applet plug-in, though, so you would be required to install one from Oracle if you want that. Alternately, just install Java 7 from Oracle (the actual developers of Java). The latest Java exploit that's in the news today apparently only affected Java 6 and earlier.
However, installing Java for things like WordPress plug-ins and Facebook tools is foolhardy. Java has a long track record of being hacked repeatedly, and has proven itself to be extremely insecure. It should not be used unless your very livelihood depends on it, and even then only with extreme caution. I've never encountered a WordPress plugin that requires Java, and though I have no experience with Facebook development, I doubt that Java is a requirement there. (If it is, that's just another reason to quit using Facebook.)
Really, using Java is like sharing Typhoid Mary's toothbrush.