Dear Java Programmer: For an interface not to be directly constructed as an object is understandable. Although, the interface is subfamily of abstract class. What is the point of having this abstract class which is like an interface with method signatures with partial implementation? Not too understanding about this detail? Please comment.
JKid --- On Tue, 7/14/09, Georgiana Lungu <[email protected]> wrote: From: Georgiana Lungu <[email protected]> Subject: [java programming] Re: subclassed? To: "Free Java Programming Online Training Course By Sang Shin" <[email protected]> Date: Tuesday, July 14, 2009, 3:33 AM They can do what ever you program them to do, is just that you can not create an object with it directly. On Jul 13, 12:38 pm, Maurizio Marrocco <[email protected]> wrote: > Hello, > I have a doubt regarding the constructors of an abstact class. Do they do > something or they only call the constructors of its superclass? > > Regards, > Maurizio Marrocco > > On Mon, Jul 13, 2009 at 10:26 AM, Georgiana > > > > Lungu<[email protected]> wrote: > > > Well, first of all, running the constructor of a subclass calls the > > constructors of its parents, so creating an instance of a subclass > > makes the constructor of the abstract class run. Secondly, if you have > > any variable that refers to the type of the inherriting subclass, it > > still passes the is-a test for the tyep of the abstract parent class, > > so it is, implicitly an object of that type and you can use it to call > > abstract classs' methods and fields.- Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/javaprogrammingwithpassion?hl=en -~----------~----~----~----~------~----~------~--~---
