"…Apart from being the second highest growth language on GitHub next to CoffeeScript, Java – already the language with the second most associated tags on Stack Overflow – outpaced the the median tag volume growth rate of 23%. This growth is supported elsewhere; on LinkedIn, the Java user group grew members faster than every other tracked programming language excepting C# and Java..."The RedMonk Programming Language Rankings: February 2012 Java does also well on Tiobe: Java is still #1 (but C is close :-)) and Java has the most commits made by open source developers (from ohloh.net). However: C is very close again.
It seems like 2012 will be a good year for Java …and C :-)
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