His argument seems to be that the JIT somehow makes Java less efficient. That's plain wrong. Yes, running the JIT will take some processor juice, but you run it

His argument seems to be that the JIT somehow makes Java less efficient. That's plain wrong. Yes, running the JIT will take some processor juice, but you run it because you'll save processor time in the long run. Yes, Java will probably use more watts than your C++ equivalent, but that's despite of the JIT, not because of it.