the Javan rhinos in Cat Tien are now extinct and have been since October 2011 as has been said by the International Rhino Foundation
Unfortunately true
what if there are Javan rhinos in a zoo somewhere, but have been mistakenly labeled as Indian rhinos? I mean think about it; they're in the same genus and the only physical difference one can see is the size (the Javans are smaller). File that under things that make you go "hmmm"...
I suggest you reread the beginning of this thread as that question was asked and discussed earlier.
~Thylo