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The Dalvik VM does run on x86 now... You'd just need to convert all your .jars and that's it. I haven't heard of any other incompatibilities with standard Jav

• eropple 14y ago
  I don't know if such a port exists, but I do know that I wouldn't want one. Dalvik's performance characteristics are scary-bad and there are plenty of incompatibilities with Java libraries that do any sort of weaving or code generation (so you still can't use Groovy, Rhino, etc.).
  • ansible 14y ago
    ... and there are plenty of incompatibilities with Java libraries that do any sort of weaving or code generation ... Ah, good to know. I've mostly just had to bring in things like a database library, and in one case LuaJ. None of those did need to do bytecode generation.
    • eropple 14y ago
      Yeah, for that you'll be fine, but take Rhino for example - Rhino offers, through LiveConnect, the ability to create JavaScript objects, at runtime, that satisfy Java interfaces. Which is cool, and useful for a lot of stuff. But the version of Rhino you can use on Dalvik has all of the bytecode generation disabled (obviously) and as a consequence, it can't emit the necessary bytecode to create the interface-fulfilling Java wrapper to make the JS object do what you want. It's generally bogus. Also it's really hard to express how much slower Dalvik is than HotSpot in the general case, too. It seems faster with the Android 4.2 version (by about 30%, in my highly unofficial testing) but it's still pretty agonizingly slow.