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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