At 05:54 PM 4/23/01, you wrote:
>So if not, that's not the case?
>
>Thanks.
>Hunter
>
> > From: "Tim O'Neil" <[EMAIL PROTECTED]>
> > Reply-To: [EMAIL PROTECTED]
> > Date: Mon, 23 Apr 2001 14:26:08 -0700
> > To: [EMAIL PROTECTED]
&g
hundred milliseconds anyway.
Good luck with your endeavors,
Fraternally,
Craig
-Original Message-
From: Jeff Kilbride [mailto:[EMAIL PROTECTED]]
Sent: Monday, April 23, 2001 9:35 PM
To: [EMAIL PROTECTED]
Subject: Re: ArrayList vs. Vector
Hi Craig,
Thanks. I may re-investigate the neces
IL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, April 23, 2001 4:39 PM
Subject: RE: ArrayList vs. Vector
> Hello,
>
> I'm not really sure why you are doing what you are doing but if you need
key
> value pairs that can be called arbitrarily you may consider a HashM
; -Original Message-
> From: Jeff Kilbride [mailto:[EMAIL PROTECTED]]
> Sent: Monday, April 23, 2001 5:06 PM
> To: [EMAIL PROTECTED]
> Subject: Re: ArrayList vs. Vector
>
>
> I recently re-wrote some older java code (jdk 1.1 based) and one of my
goals
> was to use th
23, 2001 5:06 PM
To: [EMAIL PROTECTED]
Subject: Re: ArrayList vs. Vector
I recently re-wrote some older java code (jdk 1.1 based) and one of my goals
was to use the new collection classes. I moved all of my Hashtables/Vectors
that didn't need to be thread safe to HashMaps/ArrayLists. No
s,
Craig
Oh yeahow's your tomcat? Mine are doing great.
-Original Message-
From: Jeff Kilbride [mailto:[EMAIL PROTECTED]]
Sent: Monday, April 23, 2001 3:54 PM
To: [EMAIL PROTECTED]
Subject: Re: ArrayList vs. Vector
Ok, that makes sense, but I don't think it applies to my cas
rge object,...)
-- Bill K.
> -Original Message-
> From: Jeff Kilbride [mailto:[EMAIL PROTECTED]]
> Sent: Monday, April 23, 2001 3:54 PM
> To: [EMAIL PROTECTED]
> Subject: Re: ArrayList vs. Vector
>
>
> Ok, that makes sense, but I don't think it applies to my
>
probably doing something
> which needs similar synchronization--whatever kind of collection you're
> using.
>
> -- Bill K.
>
>
> > -Original Message-
> > From: Jeff Kilbride [mailto:[EMAIL PROTE
So if not, that's not the case?
Thanks.
Hunter
> From: "Tim O'Neil" <[EMAIL PROTECTED]>
> Reply-To: [EMAIL PROTECTED]
> Date: Mon, 23 Apr 2001 14:26:08 -0700
> To: [EMAIL PROTECTED]
> Subject: Re: ArrayList vs. Vector
>
> At 02:07 PM 4/23/2001 -0
eds similar synchronization--whatever kind of collection you're
using.
-- Bill K.
> -Original Message-
> From: Jeff Kilbride [mailto:[EMAIL PROTECTED]]
> Sent: Monday, April 23, 2001 2:06 PM
> To: [EMAIL PROTECTED
At 02:07 PM 4/23/2001 -0700, you wrote:
>But that would only apply to objects kept in the application or session
>scope, yes?
>
>If an object a new object is created and placed in the request scope, it's
>only going to be accessed by one user (that request) right?
Keep thinking that if you write
At 02:06 PM 4/23/2001 -0700, you wrote:
>I still use Vectors/Hashtables when I need thread safety, though. Does
>anyone know if it's faster/better to wrap one of the new collection classes
>in a Collections.synchronized* class instead? It just seems easier to me to
>use Vectors/Hashtables, since t
,
--jeff
- Original Message -
From: "Tim O'Neil" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, April 23, 2001 1:47 PM
Subject: Re: ArrayList vs. Vector
> At 01:09 PM 4/23/2001 -0700, you wrote:
> >This leads to a new question...
> >
>
ECTED]>
> Reply-To: [EMAIL PROTECTED]
> Date: Mon, 23 Apr 2001 13:47:01 -0700
> To: [EMAIL PROTECTED]
> Subject: Re: ArrayList vs. Vector
>
> At 01:09 PM 4/23/2001 -0700, you wrote:
>> This leads to a new question...
>>
>> What impact does synchronization have on W
I recently re-wrote some older java code (jdk 1.1 based) and one of my goals
was to use the new collection classes. I moved all of my Hashtables/Vectors
that didn't need to be thread safe to HashMaps/ArrayLists. No problems under
Tomcat.
I still use Vectors/Hashtables when I need thread safety, t
Your statement is assuming quite a bit about the author's intent to use the
object.
-Original Message-
From: Danny Angus [mailto:[EMAIL PROTECTED]]
Sent: Monday, April 23, 2001 1:02 PM
To: [EMAIL PROTECTED]
Subject: RE: ArrayList vs. Vector
they aren't synchronised, tomc
At 01:09 PM 4/23/2001 -0700, you wrote:
>This leads to a new question...
>
>What impact does synchronization have on Web applications? Where is it
>necessary?
Well, the only good use of a collection is for keeping
tabs on a group of data records, right? Well, what happens
if one web user hits yo
This leads to a new question...
What impact does synchronization have on Web applications? Where is it
necessary?
> From: "Tim O'Neil" <[EMAIL PROTECTED]>
> Reply-To: [EMAIL PROTECTED]
> Date: Mon, 23 Apr 2001 13:03:25 -0700
> To: [EMAIL PROTECTED]
> Subject:
At 03:59 PM 4/23/2001 -0400, you wrote:
>Vectors are thread safe, by default ArrayLists aren't.
But its a fairly trivial matter use an Collection interface
that has a synchronized method to do an operation where
synchronizing is desired.
they aren't synchronised, tomcats thread pooling may cause unpredictable
numbers of threads to have access to your objects, even once the servlets
method has returned(unless you use single thread model).
What do you stand to gain at the expense of the risk?
> -Original Message-
> From: Hu
TECTED]
> Subject: Re: ArrayList vs. Vector
>
>
> Hunter Hillegas wrote:
>
> > I use Vectors in some parts of my Web app and I'm thinking
> about using
> > ArrayLists instead...
> >
> > Any caveats to using them in a Web app environment?
> >
> > Hunter
>
> Vectors are thread safe, by default ArrayLists aren't.
>
An ArrayList will provide better performance but it is not synchronized.
ArrayLists are part of the Java 2 framework. As long as you do not need
your application to perform in a pre Java 2 environment it is my opinion
that the ArrayList is an attractive option. The methods of dealing with
ArrayL
Both containers belong to Java 2 collection hierarchy,
and since Web app run under JVM, both are fine...
Jerry
-Original Message-
From: Hunter Hillegas [mailto:[EMAIL PROTECTED]]
Sent: Monday, April 23, 2001 3:37 PM
To: Tomcat User List
Subject: ArrayList vs. Vector
I use Vectors in so
Hunter Hillegas wrote:
> I use Vectors in some parts of my Web app and I'm thinking about using
> ArrayLists instead...
>
> Any caveats to using them in a Web app environment?
>
> Hunter
Vectors are thread safe, by default ArrayLists aren't.
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