Can anyone quantify performance differences between C++ and Java?

Question

Java was initially slow before the JIT but today performance is pretty close to C++. I want to know if someone has done measurable performance comparisons between the two langu

Answer 1

What many people forget is that JIT techniques can be applied to any kind of binaries, even those produced by a C++ compiler. Most of the benefits of JIT compilation for Java are also valid for C++ if you use something like HP's Dynamo (an emulator that runs executables faster than the native chip it runs on and emulates). Runtime profiling is not really a performance advantage of Java, but of JIT compilation in general.