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From: Patrick Roemer <sangamon@netcologne.de>
Newsgroups: comp.lang.java.programmer
Subject: Re: double == double
Date: Thu, 20 Oct 2016 15:03:05 +0200
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Responding to 4ndre4:
> On 18/10/2016 17:55, Patrick Roemer wrote:
>> It should rather be: C holds a reference to another object D, and its
>> methods trigger sending messages to D.
> 
> Let's say you have a 'Person' class that holds an object of type 
> 'Email'. How should the class 'Email' be defined if not as something 
> that contains a string and methods (e.g. validation) that act on that 
> string?

Last time I checked, Strings were objects with methods in Java, so
C ~ Email, D ~ String.

Validation methods don't seem to make much sense on an Email object -
should be named PerhapsAnEmail, otherwise.

Best regards,
Patrick