I am in the process of migrating from v2.1 to v3.0beta3, and am having problems. I went through all the migration steps, but when I compile my project I get the error:

[javac] bad class file: C:\hibernate\v3.0beta3\hibernate3.jar(org/hibernate/Query.class)
[javac] class file has wrong version 49.0, should be 47.0
[javac] Please remove or make sure it appears in the correct subdirectory of the classpath.

I am building my project against version 1.3.1 of the JDK -- would this cause this type of error?

Thanks. That's what I figured was going on, which is why I posted a separate topic about problems building hibernate3.

I tried building Hibernate 3.0 against jdk 1.3.x and am having problems.

I get a compile error because ResultSetWrapper is dependent upon ResultSet.updateArray(), a function I can't find in the 1.3.x java rt.jar. It does appear in the 1.4.x jdk, though.

I hope I'm missing something obvious.