From: Roseanne Zhang <roseanne@...>
Date: 2006-11-19T14:36:05+09:00
Subject: Re: Ruby vs Java vs c++

El Gato wrote:
> Ruby and the speed of C++.  Welcome to the club.  Strangely enough, 
> Java's domain really is somewhere between each.  Plus, you'll never 
> truly appreciate a language like Ruby until you deal with a more... 
> verbose language such as Java.

Everybody here or somewhere else take that for granted: Java is slower 
than C++, but actually that is not true.

I thought so too. However, my computational heavy practice proved, to 
certain extent, otherwise.

Interesting enough, I was a very experienced C++ programmer, and 
learning Java in 2000. I got an very heavy algorithm job. I write the 
same code in Java and C++. When the algorithm was relatively simple, my 
C++ code was about twice faster than Java c++/Java = 610/1085. However, 
when my algorithm became extremely heavy iteration, the result was 
c++/Java = 26000/12000. Java was more than twice faster than C++.

I asked several Java experts include Jason Hunter, Daniel Brookshier 
about the question, why? The answers are the same, JIT!!!!


-- 
Posted via http://www.ruby-forum.com/.