Most of the Googlers I know writing Java code would rather not be writing Java code. They would prefer Python or even Javascript (and a lot of FP enthusiasts also), but Java is what Android needs so Java it is. I would be very surprised if Google was hiring many people who only knew Java or were even very enthusiastic about it.
Perhaps the only language more reviled than Java in Google is C++.
Perhaps the only language more reviled than Java in Google is C++.