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Just remember when you talk about "cool" and popular that, Google+, GMail, LinkedIn, and many parts of Twitter are Java.

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For twitter: JVM != Java

Also remember that Google uses C++ as well for their infrastructure

LinkedIn, yep

Google is heavily reliant on Java. LinkedIn and Twitter both use Scala and Java. I'm not really sure that pointing out that Google has some C++ code really disproves that Java is used heavily at google. Java is still very widely used, more so than more fashionable languages like python and ruby, but the syntax is a bit long on the tooth, hence the popularity of Scala, Clojure and Groovy.

" I'm not really sure that pointing out that Google has some C++ code really disproves that Java is used heavily at google. "

Of course not

"Java is still very widely used, more so than more fashionable languages like python and ruby""

Yes, but "widely used" is a tricky term, I'm sure cases both for and against can be found.

But to talk about Google, last I heard it's only possible to develop application there in the following languages: JS, Java, C++, Python (there are exceptions of course, for specific libraries or things like ObjC for iOS)

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