The crux of the matter is that Dalvik is not a JVM. It cannot run Java bytecode. Google supplies a tool to convert Java bytecode to Dalvik bytecode.
I won't even pretend to understand Sun's ownership of the JVM IP, the licensing agreements it had with JVM implementors, patents etc. But my view from afar is that Google tried to route around all that by using a different VM architecture, but (possibly) exposed its self to a different set of legal vulnerabilities.
I won't even pretend to understand Sun's ownership of the JVM IP, the licensing agreements it had with JVM implementors, patents etc. But my view from afar is that Google tried to route around all that by using a different VM architecture, but (possibly) exposed its self to a different set of legal vulnerabilities.