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On Thu, 14 Oct 2010 17:05:11 -0400, Orcan Ogetbil wrote
>

quoted text
> Pretty much all the big finance companies in Wall Street (i.e. the

> corporates that rule the world) develop in C++. Just to name a few,

>  JP Morgan, Goldman Sachs, Knight, Credit Suisse. They need speed

> for transaction as they play their games in microseconds. Also many hedge

> funds do.

Or the do it in hardware - no kiddin', I've seen trading boxes done in

FPGA, not even an operating system, the TCP/IP stack was done in

hardware - pretty cool!  But let's not forget that these systems

aren't typical - I'm pretty shure even within Credit Suisse et al. have

substantial pools of java code :-)
> >> Also Java code is slightly more portable

quoted text
> >> than C/C++.

> >

> > I's not the code that's portable, it's the binaries. Try to use a library

> > _compiled_ with C++ compiler A

> > with a program compiled with compiler B on the same box! You can sell Java

> > class files and run them on

> > anything from Windows, Mac, Linux to TueUinx, Solaris (rip) and AS400

mainframes.

quoted text
> >

>

> No need to play word games. I mean in C/C++ you need to use #ifdef

> __WIN32__ (or whatever) if you want your program to be portable. That

> is what I mean by portable code. In contrast, Java world doesn't only

> consist of classes and .jar files. Many operations (especially low

> level ones, or those that need speed) are implemented in JNI, which

> renders Java still C/C++ dependant, hence not easily portable.

Argh, conflicting information: what point do you want to  make? Is

java more portable or not?

C++:  In a world of bought components recompilation is not happening.

Java & JNI: the places I've been so far all had very strict rules of

_not_ using JNI because of it's unportability.

BTW, what _many operations_ in Java are implemented in JNI? Are you maybe

mixing up Java (the language) and the Java virtual machine? 
 RalfD
> Orcan
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