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From: Martin Gregorie <martin@address-in-sig.invalid>
Newsgroups: comp.lang.java.programmer
Subject: Re: can you give me some hints on the Oracle Java SE related certificates?
Date: Tue, 22 Sep 2015 11:02:20 +0000 (UTC)
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On Mon, 21 Sep 2015 13:57:23 -0700, John wrote:

I think you missed the most important thing about interface declarations, 
though: they correspond most closely to a C header file containing 
prototypes. Interfaces don't really have anything to do with inheritance 
and don't allow you to define a constructor. 

Using an interface is just a promise that your class will implement the 
methods defined in it.


-- 
martin@   | Martin Gregorie
gregorie. | Essex, UK
org       |