Groups > comp.lang.java.programmer > #32951

Re: Teaching "purely object-oriented" Java

Path	csiph.com!news.swapon.de!aioe.org!.POSTED!not-for-mail
From	Manuel Collado <m.collado@domain.invalid>
Newsgroups	comp.lang.java.programmer
Subject	Re: Teaching "purely object-oriented" Java
Date	Wed, 28 Oct 2015 10:17:03 +0100
Organization	Aioe.org NNTP Server
Lines	27
Message-ID	<n0q3tc$2ln$1@speranza.aioe.org> (permalink)
References	<Java-20151027231043@ram.dialup.fu-berlin.de>
NNTP-Posting-Host	obyFBRFjaiKp0R863maPEw.user.speranza.aioe.org
Mime-Version	1.0
Content-Type	text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding	8bit
X-Complaints-To	abuse@aioe.org
User-Agent	Mozilla/5.0 (Windows NT 5.1; rv:17.0) Gecko/17.0 Thunderbird/17.0
X-Notice	Filtered by postfilter v. 0.8.2
Xref	csiph.com comp.lang.java.programmer:32951

Show key headers only | View raw

El 27/10/2015 23:17, Stefan Ram escribió:
>    Some people complained that Java was not »purely
>    object-oriented« because one is forced to use non-static
>    methods.

This is a questionable argument. Classes are in fact higher-order 
objects. So, why shouldn't them have no methods?

Class methods are as pure OO feature as higher-order functions in pure 
functional programming.

> For example, in teaching Java, one has to write:
>
> public final class Main
> { public static void main( final java.lang.String[] args )
>    { java.lang.System.out.println( "Hello world!" ); }}
>
>    with a /static/ method.

Well, you can avoid it. But consider that the unavoidable 'new' operator 
is in fact a static method of the Object class.

Just an opinion.

-- 
Manuel Collado - http://lml.ls.fi.upm.es/~mcollado

Back to comp.lang.java.programmer | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

Re: Teaching "purely object-oriented" Java Manuel Collado <m.collado@domain.invalid> - 2015-10-28 10:17 +0100
  Re: Teaching "purely object-oriented" Java Lew <lewbloch@gmail.com> - 2015-11-29 23:05 -0800
    Re: Teaching "purely object-oriented" Java Arne Vajhøj <arne@vajhoej.dk> - 2015-11-30 20:13 -0500
      Re: Teaching "purely object-oriented" Java Lew <lewbloch@gmail.com> - 2015-12-02 16:30 -0800

csiph-web