Q: how to run current java

Check to see if Java is enabled by going into your web browser's preferences. For example, if you are using Safari, click on Safari, then Preferences...., then the Security tab, then make sure the boxes next to "Enable Java" and "Enable JavaScript" are checked.  For Firefox, click on Firefox, then Preferences..., then the Content tab, check the box for "Enable JavaScript". Same general idea for any other web browser.  Hope this helps!

Just to clear up some confusion here - JavaScript has nothing whatever to do with Java; they are not related in any way.

The most recent updates disabled Java in Safari; you'll need to enable it again as detailed by bhskyfly.

You should also check Applications > Utilities > Java Preferences and ensure the boxes are checked for the Java SE 6 versions.

Javascript should not be disabled (it has nothing to do with Java).

However, if you need the Jave 6 JRE and plug-in, MadMAC0 has posted at

https://discussions.apple.com/message/20107182?ac_cid=tw123456#20107182

Apple has also posted (Oct 22/12) the approved solution for restoring the Java 6 plug-in:

Java for OS X 2012-006: How to re-enable the Apple-provided Java SE 6 applet plug-in and Web Start functionality.

Sorry for the confusion.  I thought I could edit my previous post, but it looks like I cannot.  Anyway, thanks for the clarification.

You only get 15 mins to edit a post, then it's locked.

Java for OS X 2012-006: How to re-enable the Apple-provided Java SE 6 applet plug-in and Web Start functionality

This article has a last modified of 12/18/12. I doubt it's still applicable after the XProtect blacklist of Java 6/7 for Safari on 1/11/13.