Hi,
Thanks to all who replied.
Vasudev
> -----Original Message-----
> From: Ernie V [SMTP:[EMAIL PROTECTED]]
> Sent: Thursday, November 25, 1999 11:49 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Basic (but tricky) Java Language question
>
> The answer is (b), although it is not always clear with String objects
> whether a
> new instance will be created on each itteration. And there is no gaurantee
> that
> the allocated memory will be garbage collected. I would use StringBuffer
> in this
> case and declare it outside the loop.
>
> -ernie
>
> RVASUDEV wrote:
>
> > Hi,
> >
> > (I posted this on a Java mailing list, got a couple of answers,
> > not too sure about their validity. Know that a lot of the people
> > on this list are Java gurus, so I'm posting it here).
> >
> > In a code fragment like this (the JDBC stuff is not relevant, just used
> as
> > an example):
> >
> > // load driver, connect to dbURL, create Statement, execute
> query.
> > ResultSet rs;
> > while (rs.next()) {
> > String col = rs.getString(1);
> > // do something with col
> > }
> >
> > My question : how is the declaration/definition/allocation of the col
> String
> > object handled ?
> > Is it like this :
> >
> > a) col is declared/defined/instantiated only on the first
> iteration
> > of the loop,
> > and the same object is used on all subsequent iterations
> >
> > or
> >
> > b) a new col Java object is declared/defined/instantiated on
> each
> > iteration and
> > goes out of scope and is a candidate for garbage collection) at
> the
> > closing
> > brace of the while loop ?
> >
> > or
> >
> > c) some other way ?
> >
> > TIA
> > Vasudev
> >
>
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