Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.fsmpi.rwth-aachen.de!eternal-september.org!feeder.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: Scott Dunning <scottwd01@gmail.com>
Newsgroups: comp.lang.java.programmer
Subject: Re: Help with methods, classes and parameters
Date: Wed, 30 Jul 2014 22:01:00 -0700
Organization: A noiseless patient Spider
Lines: 38
Message-ID: <lrcidd$ndj$1@dont-email.me>
References: <lra1dp$9jh$1@dont-email.me> <lra7be$l2s$1@gregory.bnet.hr> <53d993b9$0$299$14726298@news.sunsite.dk> <lrc70j$rht$1@dont-email.me>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Date: Thu, 31 Jul 2014 04:58:21 +0000 (UTC)
Injection-Info: mx05.eternal-september.org; posting-host="11828741c91d0da908948c6ecdf164c7"; logging-data="23987"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX1+mzxVZVMBlu3zHGz8AYa7l0dIJwwaSRMw="
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.6.0
In-Reply-To: <lrc70j$rht$1@dont-email.me>
Cancel-Lock: sha1:eLpEc+CAjYO6c/mc3deXFgX1Mb8=
Xref: csiph.com comp.lang.java.programmer:29454

On 7/30/14, 6:43 PM, markspace wrote:
> On 7/30/2014 5:54 PM, Arne Vajhøj wrote:
>
>> One should just be aware that there are some (few but some) cases
>> where static and inner classes make sense.
>
> Just to toss out an example of static methods, when a class's purpose is
> only to provide functions (and sometimes helpful utility methods), you
> should make all the methods static, and make the class final and
> non-instantiable.
>
> For example, the java.lang.Math class contains only mathematical
> functions.  All of its methods are static, and the class itself it final
> and non-instantiable.
>
> package myproject;
>
> public class MyUtilities {
>
>    // all private ctors makes the class final and
>    // non-instantiable.
>
>    private MyUtilities() {}
>
>    public static void doThis() { ...
>    }
>
>    public static double calculateThat() { ...
>    }
>
> }
>
>
Thanks everyone, you helped me understand everything a lot more!

I have another quick question.  One of the options in in the menu is if 
the user enter 0 to quit the program.  I'm not sure how to go about that 
in the switch statement?