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I think that's more of a reflection of the RebelLabs blog readership than the Java developer community at large. Their products as well as their blog, are geared mostly to web developers.

It either means Android makes up only a small percentage of the total Java market... or the group used to create these statistics is not representative of the Java developer world as a whole.

I doubt Android is counted in here at all. It's really a different beast compared to regular Java. This 'mobile' figure could be explained by Java Mobile Edition developers alone.

for some strange reason, java developers (web, framework) are not much aware of android.