Server Help

Dr Brain · Posted: Mon May 22, 2006 11:48 am *Post maybe stupid* Post subject:

If there is only one non-abstract class in existance of a certain superclass, Java doesn't have to do virtual function table lookups, it just compiles the function pointer straight into the code (or inlines it). Of course this compiled code is discarded by the JVM if another non-abstract class comes into play. But with C++, a virtual function always involves a virtual function table lookup.

EDIT: was missing a word
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Mr Ekted · Movie Geek Gender: Joined: Feb 09 2004 Posts: 1379 Offline

Ok, but that's hardly a reason to use Java "for speed". It's still slower overall in every way from a functional point of view.

Dr Brain · Posted: Mon May 22, 2006 6:03 pm *Post maybe stupid* Post subject:

No, but JVMs are getting smarter every day.

The difference between a console Java program and a C++ one is not notacable except in certain rare circumstances (doing extremely varied computations (just a simple computation over and over would get compiled to native by the JVM and run the same as C++)).

The differences between C++ and Java GUIs *is* humanly noticable, but this is where I point out that Java GUIs can be developed in a fraction of the time. Unless you're coding professionally (and sometimes even then), the slower GUI is quite worth the quick development time.

Cyan~Fire · Posted: Mon May 22, 2006 7:10 pm *Post maybe stupid* Post subject:

Dr Brain · Posted: Mon May 22, 2006 7:26 pm *Post maybe stupid* Post subject:

The server side JVM is extremely good at what it does. Server programs run for a long time, so the JVM actually takes the time to compile and heavily optimize the native code it generates. This means that for all intents and purposes the server side programs run every bit as fast as C++ programs, but with all the niceities of the Java language.

SamHughes · Posted: Mon May 22, 2006 8:39 pm *Post maybe stupid* Post subject:

SpecShip · Posted: Tue May 23, 2006 4:36 am *Post maybe stupid* Post subject:

You can lead a horse to water, you may even force it to drink but all the kick ass games and their servers are still being made in C++ and runescape is gay java crap that UO laughs about at nights.
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