I don't work from Wolfram, but the first time I started Mathematica after the upgrade it informed me it needed to install Java 6. I agreed to the installation and after waiting for the installation Mathematica continued it's startup just fine. I'm not sure what this did to my Java installation, I don't customize or use it directly myself, but if you are not directly using the Mac's Java installation I don't think there's any reason for concern.
On Oct 30, 2013, at 12:20 AM, David Latin <firstname.lastname@example.org> wrote:
> > I am thinking of upgrading soon, but am led to believe from Web discussions > that Mathematica 9 will not run with Java 7 (under OS X 10.6.8), but only > the Apple-provided Java 6 (some have reported having to uninstall Java 7 > and go back to Java 6). > Also, I run FireFox and for some time the Java 6 applet plug-in has been > reported as "vulnerable" and requiring upgrade to Java 7. But this > requires upgrading OS X. > > Can someone from Wolfram please clarify if Mathematica 9 will definitely > run with Java 7 ? > > Thanks > > > On 29 October 2013 10:27, Murray Eisenberg <email@example.com> wrote: > >> I haven't seen any incompatibilities or surprises with Mathematica 9.0.1 >> under OS X 10.9 (Mavericks). After upgrade from OS X 10.8.5 to 10.9, I can >> say of that the existing installation of Mathematica: it just works. >> >> >> On Oct 28, 2013, at 12:40 AM, Raul Martinez <firstname.lastname@example.org> wrote: >> >>> I use Mathematica 9 on a MacBookPro currently running MacOS X 10.8.5 >> (Mountain Lion). >>> >>> Yesterday, Apple released MacOS X 10.9 (Mavericks). >>> >>> Has anyone tried to run Mathematica 9 using Mavericks? If so, did you >> encounter problems or was it a seamless update? >> >> --- >> Murray Eisenberg >> email@example.com >> Mathematics & Statistics Dept. >> Lederle Graduate Research Tower >> University of Massachusetts >> 710 North Pleasant Street >> Amherst, MA 01003-9305 >> >> >> >> >> >> >>