Hi Ted,
It seems to me that even if you were right, you'd be wrong in the sense
that the compiler disagrees with you. Remember that the compiler error was:
>> JDBCServlet.java:115: Variable rs may not have been initialized.
>> String sd = rs.getString(2);
So, is the compiler wrong? If you look at the JLS paragraph preceeding
your 4.5.4 reference, that is, 4.5.3 Kinds of Variables, you'll see that, in
a situation like the following ( whether inside a class or not, )
public void myLocalMethod()
{
ResultSet rs;
}
rs fits the definition of local variable. It is not a class variable,
instance variable or array component as defined in 4.5.3. Your own quote
states "A local variable (�14.3, �14.12) must be explicitly given a
value..." More detail is given in 14.3.4 Execution of Local Variable
Declarations. I'd say that Srini is dead on.
Joe Sam
Joe Sam Shirah
Autumn Software
Consulting/Development Services when YOU need them
___________________________________________
-----Original Message-----
From: Ted Neward <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Saturday, December 18, 1999 11:11 PM
Subject: Re: error messages
Srini, unfortunately, you're absolutely incorrect on this. References are
always set to null if not declared to be any other value; it's in the Java
Lang Spec:
Section 4.5.4 ("Initial Values of Variables") of the JLS:
[snip quote]
...
A local variable (�14.3, �14.12) must be explicitly given a value before it
is used, by either initialization (�14.3) or assignment (�15.25), in a way
that can be verified by the compiler using the rules for definite assignment
(�16).
...
[snip quote]
Ted Neward
Java Instructor, DevelopMentor ( http://www.develop.com )
http://www.javageeks.com/~tneward
-----Original Message-----
From: Srini <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Sunday, December 12, 1999 9:40 PM
Subject: Re: error messages
>very simple
>
>ur declaring rs as a local variable so it has to be initialized to any
value
>before ur accessing it. Instead of
>
>ResultSet rs;
>
>say
>
>ResultSet rs=null;
>
>and put ur code in a try and catch block.
>
>Hope this Helps
>Srini
>
>Kelsey Fedde wrote:
>
>> JDBCServlet.java:115: Variable rs may not have been initialized.
>> String sd = rs.getString(2);
>> �
>> JDBCServlet.java:115: Exception java.sql.SQLException must be caught, or
it
>> must
>> be declared in the throws clause of this method.
>> String sd = rs.getString(2);
>>
...
>> suggestions?
>>
>> thanks,
>> Kelsey
>>
>>
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