Re: Multiple interfaces

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#282

From: Darryl L. Pierce
Date: Mon, 17 Jun 2002 11:46

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On Mon, 17 Jun 2002 00:56:34 -0400, Tristan Reeves wrote:

> Nothing in particular, it's a general observation related to custom
> interfaces:
> 
> interface Intf1{
>     public void X();
> }
> 
> interface Intf2{
>     public void X();
> }
> 
> class MyClass implements Intf1, Intf2{
>     ????
> }

What's the problem with the above? In true multiple inheritance, where
you're inheriting multiple _implementations_, the diamond-of-death occurs
where you're not sure which _inherited_ implementation to invoke first,
or whether it's desirable to invoke one first. With Java, you have
multiple inheritance on at the _interface_ level, which alleviates the
diamond-of-death problem: you only have one inherited implementation on
_any_ method, and that solves the problem of "which inherited
implementation to invoke first".

HTH.

-- 
/**
 * @author Darryl L. Pierce <mcpierce@databasix.com>
 * @see    The Infobahn Offram <http://welcome.to/mcpierce>
 * @quote  "What do you care what other people think, Mr. Feynman?"
 */

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From: "Darryl L. Pierce" <mcpierce@databasix.com>
Subject: Re: Multiple interfaces
Date: Mon, 17 Jun 2002 07:46:28 -0400
Newsgroups: aus.computers.java,borland.public.jbuilder.java.language,comp.lang.java.programmer
Organization: Out-Of-Work Hackers Anonymous
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