I guess JBuilder must come with its own JVM. Are there any settings in
JBuilder to this effect? Just looked at the product web page and yes,
JBuilder does seem to use its own JVM. The lastest version 6 says jdk
1.3/1.4, so I bet version 5 has JDK 1.2. You could try making sure jdk
1.3 is at the very start of PATH, ie before JBuilder, and see what
happens.

I suppose the best thing for you to do is contact Borland with the
problem, or upgrade to v6. If you find a solution/fix please post it
here in case of future reference.

chimera wrote:
>
> Compiling/running from the command line goes fine, so I guess this is a
> JBuilder-specific problem. Sorry to post something so off-topic, but I'm at
> a total loss and am hoping someone can help. I don't have any other versions
> of java other than jdk 1.3.1 installed... to make sure, I uninstalled and
> reinstalled it again just now. JBuilder *still* complains that the class
> file has wrong version. :-(
>
> Any ideas? Do you know how the last person to have this problem solved it?
>
> Thanks,
>
> Sue Ann
>
>
>
>
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