... And much of the rest of the code written these days: https://github.com/blog/2047-language-trends-on-github

If we're talking about the JVM, we must also include Clojure, Scala, Groovy, and any other JVM language code that would be killed if the JVM died.

If we're talking about the language, then the majority of Android and its app ecosystem are included.

Most importantly, don't forget that Java the specification is an open standard with dozens of runtime implementations and 7 compilers (not counting Google's). And the primary compiler, Sun's javac is GPL.

https://en.wikipedia.org/wiki/List_of_Java_virtual_machines https://en.wikipedia.org/wiki/List_of_compilers#Java_compile...