I am not a lawyer, so take what I'm saying here with several large grains of salt. My understanding is that a subset and a superset would both be okay. I am mo

I am not a lawyer, so take what I'm saying here with several large grains of salt. My understanding is that a subset and a superset would both be okay. I am more certain about subset than superset -- I am not sure that something like Microsoft's J++ would pass muster either. But a subset I think would still be permissible under fair use so long as the goal was to achieve compatibility. Oracle's argument is that Dalvik is not the JVM, nor is it an attempt to be the JVM. It's a competitor to the JVM that uses parts of the Java API. I don't know if they're right, and I don't know that being right should mean that Google has to pay them money or what have you as a result. I do think that people are overstating the effect that a ruling that Google infringed on Oracle's copyrights would have.