C++ vs Java

**Moni** · 03-16-2003

Why C++ is faster than Java?
How java can be made as fast as C++?

**Codeplug** · 03-16-2003

Java is an interpreted language. In other words, Java doesn't compile into machine code. It is compiled into a platform independent set of byte codes, that are executed by the Java virtual machine.
There are Java compilers that can compile Java into machine code (thus losing it's platform independence). These compilers still have to compile in a garbage collector - which in some instances, can still make Java slower than C++.

**Speedy5** · 03-16-2003

Java with the help of a VM with a JIT compiler can reach speeds of up to 15% slower than C++, which is really good considering all its language features like GC and full OOP.

**Moni** · 03-17-2003

But what they are trying to make it as fast as C++ ???

**XSquared** · 03-17-2003

>But what they are trying to make it as fast as C++ ???

Most people want a language that has very fast execution...

**zahid** · 03-17-2003

1.Performance Evaluation: Java vs C++
2.Comparative Performance Analysis of Client-Server Applications developed in Java and C++

3.An empirical comparison of C, C++, Java, Perl, Python

I guess above resouces will help you to resolve ... You will find the third one as the best for analysis. One more thing, I guess this thread should be in GD.

4.Optimizing Java for Speed

Welcome to cboard !!! Happy to see you from Bangladesh, rare to find Bangladeshies interested in C/C++ .

**Moni** · 03-19-2003

Salam Zahid Bhai!
Actually I am C/C++ programmer and know little Java! I am a newcomer to java and I am finding it slower than the C/C++ that's why I first thought "Is java going to be faster or not!"

But Many many thanks for your such good links!

If I go to Dhaka I will meet you can you give me your address

**biosninja** · 03-19-2003

_

**~~Silvercord~~** · 03-19-2003

bios: i have no clue what your thing a ma bob was for.

and full OOP.

Actually Java doesn't support full OOP, it doesn't support multi level inheritance, and that's all I know about Java.

i.e you can't do:

class Waste {
}

class Poop : public Waste {
}

clas Diarrhea : public Poop{
}

**Codeplug** · 03-19-2003

Multiple inheritence is about as good a practice as using goto's - you should only use it when it really, really makes sense. And even then it can be done other ways.

Notice also that the "goto" keyword has since been removed from Java.

gg

**biosninja** · 03-19-2003

bios: i have no clue what your thing a ma bob was for

The stupidity of this thread. Has been done before. This is a C/C++ board not java...making this thread pointless!

Java is a multi platform language which makes it slower. And if I'm correct... it doesn't have pointers (correct me if i'm wrong). So...whats the use of Java? other than writing applets and other web stuff.

Multiple inheritence is about as good a practice as using goto's - you should only use it when it really, really makes sense. And even then it can be done other ways

Multiple inheritence is quite usefull whem used correctly and in the right places

**Yawgmoth** · 03-19-2003

Originally posted by biosninja

Multiple inheritence is quite usefull whem used correctly and in the right places

And so are gotos!

Seriously though, I think C++ is better than JAVA cuz it has multiple inheritance, it's faster, and has gotos.

Java has its place on the web (like clones of pong and space invaders), but for 90% of other stuff, C++ is better.

**biosninja** · 03-19-2003

And so are gotos

gotos should only be used when there is absolutely NO way out

**beege31337** · 03-19-2003

Java does have a limited form of gotos
(but not using the keyword "goto"

here is some Java code

Code:

outerLoop: while(true){
    innerLoop: for(int i = 0 ; i  < MAX ; i++){
         foo += 45;
         test: if( foo % 88 == 3 ){
                break outerLoop;
         } else if( q == r ){
                if( s == w ) break test;
         } else {
                continue innerLoop;
         }
    }
}

just a made up example, but it does show that Java allows for a large amount of gotos functionality.

**zahid** · 03-19-2003

Originally posted by Moni
If I go to Dhaka I will meet you can you give me your address

You are always welcome.

I sent you a pm, I guess you have already got it.

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