> That has also been my experience, but there's always an army of people that claims "Java can be just as fast or faster than C++". Anyone care to prove Mr.Lemi

> That has also been my experience, but there's always an army of people that claims "Java can be just as fast or faster than C++". Anyone care to prove Mr.Lemire wrong? They are not necessarily in contradiction. Java can be as fast or faster than C++ - if you choose a workload whose active set (including Java overheads) fits into the CPU cache. Of course there are very few realistic and useful workloads where that is the case. Still, most things don't have code execution as a bottleneck and/or aren't so performance critical that a factor of 3 is a big problem.