yeah... I figured it did represent something distinct in peoples hiring intentions so was worth splitting out. From a straight language POV you'd be right but I think it would miss some interesting subtelty in the stats. Also, from talking to people hiring android devs I know they'd rather they had adnroid development experience, not just any old java experience.
Maybe I should put a few different versions together to allow for a straight language shoot out and then also capture some of the other interesting comparrisons separately.
True in other Java spheres as well. Someone writing servlets will have almost nothing in common, knowledge-wise, with someone writing Android apps. And then you have EJB, which is something else entirely.
It's like Java is English, and the job ads are for working on fantasy, sci-fi, and an encyclopedia. You have to know it, but it's a tiny fraction of what you need to know.