As a rule of thumb, when you convert Java to C++, the code is about 3x slower ... and can bias the concurrency management approach based on runtime profiling information. Dynamic memory management ...

And C++ requires a large amount of source to be shipped in order to compile against it. Java defers platform-specific stuff to the runtime. There is no standard way to dynamically link to C++ classes.

Further, C++ continues to expand far more aggressively ... and project teams—then C makes more sense. And, while the Java runtime automates memory management, it’s possible to work around ...

It's a commonly asked question in a world where every software developer wants to get the most out of every clock cycle their programs consume. It was also a topic at a Java "Birds of a Feather" ...

using some C++ libraries. Later JVM releases added a JIT compiler to speed up the interpreter. The current Java compiler is written in Java, although the Java runtime is still written in C.

This extra layer means Java running on a JVM can only achieve near-native performance, while code written in C++ or Rust can be compiled into binary code and take full advantage of every CPU clock ...