Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I ran into a rather puzzling problem, trying to install Vuze on my Windows 7. I have a Java 6 JDK 64bit, but Vuze complains that it can't find a correct 32bit JRE. Yet, as far as I know it shouldn't matter which Java is installed on the computer. (See also these answers).

Now I was wondering :

  1. if it makes sense running a 32bit and a 64bit Java on the same machine,

  2. Whether that is possible, and if so

  3. what I should pay attention to in order to make sure that the correct Java is found.

Thank you in advance

PS : I have my reasons no to use the latest Vuze, so please don't tell me to update Vuze. I know.

share|improve this question
While for pure Java programs it doesn't matter which JRE is installed, some programs use external libraries which may require 32bit or 64bit JRE. – AndrejaKo Dec 26 '10 at 13:29
up vote 4 down vote accepted

You don't need JDK to run Vuze, JRE should suffice. Apparently it does matter which Java is installed on the computer. I had a similar issue with 64bit Internet Explorer. So:

  1. Yes, it does
  2. Yes, it is possible to install both JREs
  3. You don't need to pay attention, it should find the appropriate version automatically.
share|improve this answer
I know I only need JRE, but I'm developing in Java sometimes as well. Then the JDK comes in handy :-) Thx for the answer. – Joris Meys Dec 26 '10 at 22:10

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.