Differences between C++ and Java...

[Mighty]

What are differences between C++ and Java?
If I know C++ what I must to learn more for knowing Java?

Thanks

[Ako]

This question has been asked many times on here. Many people ask this question
and many more people rush into answering it but I dont think many people
will offer you an impartial answer.
Normally the answer reflects the persons wishes not the facts but the problem
is they dont see it that way, you either get told that Java is the answer
to every question ignore every thing else java is the way or you get told
exactly the opposite C++ is the only real programming language and only pros
know it, every one who says anything else is just not good enough to learn
it.
To me you will have to do your own research and decide for yourself which
one is good for what, like any other things they both have their strengths
and weaknesses. If your question regards which one should you learn well
it largely depends on what you want to do and how do want to do it.
While if you are just interested in knowing the differences between the 2
form the design, implementation and philosophical points of view i dont think
you are likely to get the answer here.



Good luck,


Ako





"Mighty" <mighty@yahoo.com> wrote:
>
>What are differences between C++ and Java?
>If I know C++ what I must to learn more for knowing Java?
>
>Thanks

[Danny Kalev]

Mighty wrote:
>
> What are differences between C++ and Java?

There are huge differences between the two: the application domains in
which they are used, the programming paradigms (Java supports only OOP
whereas C++ supports many other paradigms too, which is a major plus
IMO), the stability of the language (Java is still a fledging language),
the runtime model (an interpreted language that runs under the
supervision of a VM as opposed to C++ which produces native executables.
Guess which one is faster...) and of course, the APIs and libraries.
Many people are misled into thinking that the two languages are similar
because superficially, Java uses more or less the same syntax and both
languages have to do with OO (which by itself, is a versatile
programming paradigm that has many shapes and forms). However, once you
get to know both languages more intimately, you will notice how
different they really are. I'm not trying to sound objective -- my views
of Java and C++ are quite familiar (at least for those who have read my
previous responses to similar questions before) but I don't think anyone
will disagree with the facts I've outlined thus far. Remember also that
a programming language is a matter of personal taste. Sometimes people
use one language instead of another because they like it more.

> If I know C++ what I must to learn more for knowing Java?

You must learn Java:) Seriously, there's not much in C++ that will help
you to learn Java, and vice versa. There are some similar concepts say
abstract classes (C++) and interfaces (Java), static methods,
constructors etc. but when you get down the details, you discover that
even in these regards the languages are substantially different. I'll
give one example: constructors in C++ are used to initialize an object.
In many classes, they have a matching destructor which performs the
opposite operations, e.g., a ctor allocates memory, the dtor deallocates
it etc. In Java, you can't do that because it doesn't have real
destructors (finalize() is not even close) so your ctors also look
different.

Danny