Writing it in C isn't some magic bullet. Java you're spending your time optimizing the tail end of efforts, but C you're spending your time optimizing the bulk

Writing it in C isn't some magic bullet. Java you're spending your time optimizing the tail end of efforts, but C you're spending your time optimizing the bulk of the effort that Java gives for free. (not that I'm defending Java, but C being low level doesn't make it instantly easy to do faster stuff with).