Do a seach on your favorite search engine (like google.com :) and
search for "design patterns" (Singleton is one of many).
Or, if you rather buy books, here's a good list;
http://hillside.net/patterns/books/
I like this one;
"
Design Patterns: Elements of Reusable Object-Oriented Software
by Erich Gamma, Richard Helm,Ralph Johnson, and John Vlissides.
Addison Wesley. October 1994. "
But there are many others too.
Enjoy !
Augusto
Chris Wilson <[EMAIL PROTECTED]> wrote:
>Singleton Class -RE: [Fwd: using ResultSet with JSP?]the singleton model
>sounds intriguing--i've never heard of the though or seen it in any texts.
>where can i find some info/descriptions on it?
>
>cheers,
>chris
>
>chris wilson
>
>{phone}
>tel + 616.471.9142
>fax + 616.471.6900
>
>{email}
>[EMAIL PROTECTED]
>
>{web}
>http://www.wondergeek.com
>
> -----Original Message-----
> From: A mailing list about Java Server Pages specification and reference
>[mailto:[EMAIL PROTECTED]]On Behalf Of Matt Krevs
> Sent: Tuesday, December 07, 1999 8:21 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Singleton Class -RE: [Fwd: using ResultSet with JSP?]
>
>
> Singletons definitely have a place in java.
>
> If you're writing OO code you usually want to use interfaces. Interfaces
>cannot have static methods so the singleton model fits in really well when
>you have a number of classes that you only want to instantiate once bu also
>want them to implement interfaces.
>
> I used to have heaps of static methods in a host of classes but moved over
>to using interfaces and the singleton model and it is _much_ cleaner. Static
>methods have their place but dont dismiss the singleton pattern.
> -----Original Message-----
> From: A mailing list about Java Server Pages specification and reference
>[mailto:[EMAIL PROTECTED]]On Behalf Of Sachin Aggarwal
> Sent: Wednesday, December 08, 1999 10:57 AM
> To: [EMAIL PROTECTED]
> Subject: Singleton Class -RE: [Fwd: using ResultSet with JSP?]
>
>
> You can use static methods and variables. Singleton pattern is
>over-kill - In the true OO world a class has multiple instances because they
>have seperate behavior and data. If there is only one instance, then it's
>probably class behavior that you have. Sine Java is not true OO and doesn't
>really support extending class behavior - the static methods and behavior
>come closest to class behavior.
>
> Sachin.
>
> p.s - there are ways to make sure your class is not garbage collected -
>you can use - noclassgc option
>
> > -----Original Message-----
> > From: Cory L Hubert [mailto:[EMAIL PROTECTED]]
> > Sent: Tuesday, December 07, 1999 2:46 PM
> > To: [EMAIL PROTECTED]
> > Subject: Re: [Fwd: using ResultSet with JSP?]
> >
> >
> > I am using JRUN and JSP 1.0. I want to use a
> > ConnectionPool class that I
> > have created. It uses the Singleton Design Pattern. How
> > can I make it so
> > that I only have one instance of this class and all the JSP
> > pages & Beans
> > use that one instance.
> >
> > ==============================================================
> > =============
> > To unsubscribe: mailto [EMAIL PROTECTED] with body:
> > "signoff JSP-INTEREST".
> > FAQs on JSP can be found at:
> > http://java.sun.com/products/jsp/faq.html
> > http://www.esperanto.org.nz/jsp/jspfaq.html
> >
>
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