Re: Using abstract class that implements interface

From:
Mark Space <markspace@sbc.global.net>
Newsgroups:
comp.lang.java.programmer
Date:
Sat, 18 Apr 2009 12:10:33 -0700
Message-ID:
<HxpGl.5717$Lr6.3401@flpi143.ffdc.sbc.com>
Zuisman Moshe wrote:

"external world" they are all instances of foo_interface... But - my
colleges - that come from JAVA programming - says - it is redundant
and interface is unnecessary... Is my implementation really something
fishy , or - it "does not break" rules og "JAVA world"???


I disagree with your colleges. Using interfaces is fine, even
considered desirable. I can't understand why anyone would want to use an
abstract base class as a type instead of an interface. That borders on
naive, or worse.

The only thing I do urge you to do is to use Java naming conventions.

public interface Foo {....}
public abstract class AbstractFoo implements Foo {....}

These are much better names "Java world" for classes. I know it can be
tough when you have a lot of experience with other conventions, but
you'll be happier in the long run if you try to write Java code with the
recommended naming conventions. I can't think of anyone who does not
follow these rules.

<http://java.sun.com/docs/codeconv/html/CodeConvTOC.doc.html>

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