>>>>> "Blake" == Blake Meike <bmeike@xxxxxxxxxx> writes: Blake> I have a largish application that runs well under the Sun JRE. I'm Blake> interested in porting it to Kaffe/Classpath. My first attempts have Blake> failed in some surprising ways, and I'm anticipating an extended Blake> struggle ;) :) Blake> I would like to know if anyone has tried using the Classpath class Blake> libraries on the Sun JVM. Not that I know of. Blake> Error occurred during initialization of VM Blake> java/lang/NoClassDefFoundError: java/lang/ref/FinalReference Offhand I would guess that this is a Sun-specific internal class that the VM wants. Since Classpath doesn't provide it you either have to modify the VM, or figure out what this class does and add it to Classpath. I'd imagine this is just the first of many such cases... Tom