Android - Java / c# /c++ Speed

Question

I am to start writing my first Android application starting next week here at work. I am curious about the video and results of it found here: http://www.youtube.com/watch?v=It8xPqkKxis

The submitter indicates that c++/c# runs faster than Java on the Android platform though this was on Android 1.5.

At any rate, can anyone confirm that there is indeed a increase in performance using c++ or c# on 2.2? Our application will need as much speed and batterylife it can get.

Thanks in advance!

Edit: Per Woot4Moo's comment, yes, which implementation runs the best? Take all factors into account including runtimes, frameworks, compilers ... There is a obvious difference and I want to know if anyone has experience with writing c++/c# on android

Answer 1

As for C++: It is the "native language" the Android is written in. It probably isn't interpreted like Java is. As for C# it is most likely compiled too. And, usually, when a language is interpreted it is slower than another language (or itself maybe) if it is compiled.