automatic conversion to scala when copying a class

I have the scala plugin and work in both Java and Scala.

For some reason, when i copy a java class and paste it (just to duplicate for a template) the resulting copy seems to have gone through a minor Scala conversion.  In particular, data types are replaced by val and var.  Can I turn this off?  Is this a bug?  What is actually going on? 

Thanks for any help. 

mike