[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Static Method performance



I've seen about a 15% increase in performance between the same method static 
and non-static. The test is pretty basic (do this 1000000 times and time it) 
so I don't have real-world data.

The only downside I've experienced with static methods is that if your class 
is implementing an interface, the interface defined methods can't be static.

Other than this, I make as many methods as possible static (and final) for 
performance reasons. Since most of the code I write doesn't go into a 
published API, I declare final and then change it if extending becomes 
necessary.

BAL

>From: "Mayank Aggarwal" <aggarwalmayank@hotmail.com>
>To: <ajug-members@www.ajug.org>
>Subject: Static Method performance
>Date: Wed, 27 Feb 2002 13:02:57 -0500
>MIME-Version: 1.0
>X-Originating-IP: [156.63.134.4]
>Received: from [66.45.18.180] by hotmail.com (3.2) with ESMTP id 
>MHotMailBE466B1300274004318B422D12B487C50; Wed, 27 Feb 2002 10:06:24 -0800
>Received: (from list@localhost)by ajug.org (8.11.2/8.11.2) id 
>g1RJAS514324;Wed, 27 Feb 2002 14:10:28 -0500
>From ajug-members-request@ajug.org Wed, 27 Feb 2002 10:07:33 -0800
>Resent-Date: Wed, 27 Feb 2002 14:10:28 -0500
>X-Priority: 3
>X-MSMail-Priority: Normal
>X-Mailer: Microsoft Outlook Express 5.50.4807.1700
>X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4807.1700
>Message-ID: <OE48P1f3L0zGSOpD0mA0000c25f@hotmail.com>
>X-OriginalArrivalTime: 27 Feb 2002 18:03:41.0818 (UTC) 
>FILETIME=[16F64DA0:01C1BFB9]
>Resent-Message-ID: <Fvd7UB.A.ufD.k8Sf8@ajug.org>
>Resent-From: ajug-members@ajug.org
>X-Mailing-List: <ajug-members@ajug.org> archive/latest/1
>X-Loop: ajug-members@ajug.org
>List-Post: <mailto:ajug-members@ajug.org>
>List-Help: <mailto:ajug-members-request@ajug.org?subject=help>
>List-Subscribe: <mailto:ajug-members-request@ajug.org?subject=subscribe>
>List-Unsubscribe: 
><mailto:ajug-members-request@ajug.org?subject=unsubscribe>
>Precedence: list
>Resent-Sender: ajug-members-request@ajug.org
>
>How does static method affect performance in Java?
>
>I understand that all the method variables are created on Stack and hence 
>each calling party gets its own stack of variables, hence there should not 
>be problems of concurrency as long as only method local variables are 
>manipulated.
>
>What other reasons are there for not using a static methods ?
>
>
>Thanks
>Mayank




_________________________________________________________________
Join the world’s largest e-mail service with MSN Hotmail. 
http://www.hotmail.com