To get polymorphic behavior, you have to have a Superclass type and a Subclass object and get the behavior of the Subclass, e.g.
Superclass object = new Subclass(); object.run();
This will result in the run() method returning overridden results in Subclass rather than the results from the Superclass. This is critical to the interesting design patterns. If Perl can do that, I have learned something. Perl is not a procedural language? Amazing!
At 09:27 PM 7/9/03 +0200, you wrote:
Just to clarify, Perl is not a procedural language !!!
You can implement any OO features (abstraction,inheritance,polymorphisme etc ...) with Perl
http://www.manning.com/Conway/index.html
http://www.manning.com/getpage.html?project=conway&filename=Chapters.html
http://www.perl.com/pub/a/2003/06/13/design1.html
Jos�.
-----Original Message----- From: David Graham [mailto:[EMAIL PROTECTED] Sent: Wednesday, July 09, 2003 9:06 PM To: Struts Users Mailing List Subject: RE: [OT] Use of Static Methods
--- "Paananen, Tero" <[EMAIL PROTECTED]> wrote: > > OO programs should be made up of objects passing > > messages to other objects, not calling global functions. > > I would argue a Singleton is no better in this respect. > > The fact that they're instantiated into an object, > don't make Singletons any less "global" than static > methods.
They are instantiated into objects which means you can change the specific type, method implementations, etc. without the app knowing instead of calling a global function. If I wanted to do procedural programming I'd be using Perl, not Java.
David
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