Running Java 32bit and 64bit on same computer

32-bit64-bitjavavuze

I ran into a rather puzzling problem, trying to install Vuze 4.2.0.2 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 :

if it makes sense running a 32bit and a 64bit Java on the same machine,
Whether that is possible, and if so
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.

Best Answer

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:

Yes, it does
Yes, it is possible to install both JREs
You don't need to pay attention, it should find the appropriate version automatically.

Related Solutions

Ubuntu – Check if Kubuntu is running on 64bit or 32bit machine

Run

uname -a

My machine gives this:

Linux james-desktop 2.6.38-11-generic #48-Ubuntu SMP Fri Jul 29 19:02:55 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

It should be easy to figure out if your box is 32 bit or 64 bit from the string your box gives you.

Run a 32bit Java app on a 64bit platform

Java is designed to do this kind of thing transparently. Ever heard the slogan Compile once, run everywhere? Well, it's relevant here: Compile once, debug everywhere.

The problem you are seeing is because the GUI is windows specific. The exception you see confirms this. In general, anything that uses SWT or AWT will not work correctly on a different platform unless care is taken to make sure that it does.

Long story short, you're out of luck. You could of course use JD to extract the source and modify the GUI code to run properly on OSX. Unfortunately, that would require some experience with Java.

Best Answer

Related Solutions

Ubuntu – Check if Kubuntu is running on 64bit or 32bit machine

Run a 32bit Java app on a 64bit platform

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