methods that return void..

pls, what is syntax for methods that return void?

for example cookie.setComment()...

I can do

cookie.setComment();

but how do you assign return to a var?  and why does a method like this
return void (i.e., nothing, right?) when setComment it would seem to me
is a string (same for other methods to set values for cookies..)

I mean get an error here..  (since method doesn't return a string..)

string comment = cookie.setComment();

so how do you do this?

void comment = setComment()??

obviously got an error here too.....  thank you...

Frances

"Frances Del Rio" <fdr58@yahoo.com> wrote in message
news:42a094e5$1_1@x-privat.org...
>
> pls, what is syntax for methods that return void?
>
> for example cookie.setComment()...
>
> I can do
>
>     cookie.setComment();
>
> but how do you assign return to a var?  and why does a method like this
> return void (i.e., nothing, right?) when setComment it would seem to me is
> a string (same for other methods to set values for cookies..)
>
> I mean get an error here..  (since method doesn't return a string..)
>
>      string comment = cookie.setComment();
>
> so how do you do this?
>
> void comment = setComment()??
>
> obviously got an error here too.....  thank you...
>
> Frances

If something returns void it means it doesnt actually return anything,
therefore it is a syntax error to try and assign nothing to a variable.  If
you have a look at a method that returns void then you will probably see no
'return' in it, but if you do it will say 'return' and nothing else.
For your example, I would imagine setComment() takes a String as a
paramater, and the designer has decided to not return anything which makes
sense since all you are doing is passing a message in effect.  Some
programmers never return void, instead they take the opportunity to at least
return a boolean for sucess/failure but this is a design choice.
Anyway, the short answer is you cannot store nothing in a variable,
therefore assigning the result of a method that returns void to a variable
doesnt work.

Allan

On Fri, 03 Jun 2005 13:35:14 -0400, Frances Del Rio <fdr58@yahoo.com>
wrote:

>
>pls, what is syntax for methods that return void?
>
>for example cookie.setComment()...
>
>I can do
>
>     cookie.setComment();
>
>but how do you assign return to a var?  and why does a method like this
>return void (i.e., nothing, right?) when setComment it would seem to me
>is a string (same for other methods to set values for cookies..)
>
>I mean get an error here..  (since method doesn't return a string..)
>
>      string comment = cookie.setComment();
>
>so how do you do this?
>
>void comment = setComment()??
>
>obviously got an error here too.....  thank you...

Not sure what you are asking, but void methods do not return anything,
so attempting to assign something a value from that kind of function
will not compile.

If you need to get the comment from the cookie, I'm willing to bet
there's a function getComment()..

--
now with more cowbell

Allan Bruce wrote:
> "Frances Del Rio" <fdr58@yahoo.com> wrote in message
> news:42a094e5$1_1@x-privat.org...
> 
>
>
> If something returns void it means it doesnt actually return anything,
> therefore it is a syntax error to try and assign nothing to a variable.  I
f
> you have a look at a method that returns void then you will probably see n
o
> 'return' in it, but if you do it will say 'return' and nothing else.
> For your example, I would imagine setComment() takes a String as a
> paramater, and the designer has decided to not return anything which makes
> sense since all you are doing is passing a message in effect.  Some
> programmers never return void, instead they take the opportunity to at lea
st
> return a boolean for sucess/failure but this is a design choice.
> Anyway, the short answer is you cannot store nothing in a variable,
> therefore assigning the result of a method that returns void to a variable
> doesnt work.

ok, many thanks for yr response..  I looked at other "set" methods in
Servlet API (specif. in HttpServletResponse & ServletResponse) and well,
they all return void..  I still think this is weird..  (but Bryce is
right, of course, specif. in my ex., there IS a getComment() method, and
probaby all the others have a "get" equiv. also..) again many thanks,
also to Bryce..  Frances