Re: Good practice or not to close the file before System.exit(1)?

From	Lew <noone@lewscanon.com>
Newsgroups	comp.lang.java.help
Subject	Re: Good practice or not to close the file before System.exit(1)?
Date	2011-04-23 09:54 -0400
Organization	albasani.net
Message-ID	<iouln5$imi$1@news.albasani.net> (permalink)
References	(7 earlier) <S5qdnd_Hy-rGbizQnZ2dnUVZ_j2dnZ2d@earthlink.com> <iot00p$2q0$1@dont-email.me> <c4WdnY5-xd42iy_QnZ2dnUVZ_tqdnZ2d@earthlink.com> <iotcfi$gno$1@news.albasani.net> <-6mdnX7le_QCoC_QnZ2dnUVZ_v6dnZ2d@earthlink.com>

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Patricia Shanahan wrote:
> Lew wrote:
>> Patricia Shanahan wrote:
>>> markspace wrote:
>>>> Patricia Shanahan wrote:
>>>>
>>>>>
>>>>> There is no problem using exceptions inside main, as long as you catch
>>>>> them, so that they don't get thrown from main.
>>>>
>>>> During development, throwing exceptions from main is fine because it
>>>> gives the developer the most about of useful information.
>>>
>>> Yes, I was over-simplifying a bit.
>>
>> I disagree. Throwing exceptions from main() provides no benefit that
>> logging doesn't provide better.

> The benefit is simplicity.
>
> I often write short test programs, for example when looking into a
> newsgroup question, for which I'm the only user and that will only be
> run once. Just sticking "throws Exception" on main is simpler than
> catching exceptions and logging them.

I repeat the part that you omitted, which changes the sense of the comment you 
cited,
> I'm using "main()" as a catch-all term for the top business layer of an application,
> be it a Java application, applet, web app, service or whatever.
> The observable behavior must conform to the problem domain being solved by the application.
> Emitting implementation-level messages at the business-domain level is inappropriate
> unless the business domain *is* the implementation.

You speak of the case where the implementation is the domain, which I 
explicitly called out as a case where I agree that exceptions can be useful in 
the "main".  Thanks for elucidating that point.

-- 
Lew
Honi soit qui mal y pense.
http://upload.wikimedia.org/wikipedia/commons/c/cf/Friz.jpg

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Good practice or not to close the file before System.exit(1)? Merciadri Luca <Luca.Merciadri@student.ulg.ac.be> - 2011-04-22 00:13 +0200
  Re: Good practice or not to close the file before System.exit(1)? rossum <rossum48@coldmail.com> - 2011-04-22 00:11 +0100
    Re: Good practice or not to close the file before System.exit(1)? rossum <rossum48@coldmail.com> - 2011-04-22 12:39 +0100
      Re: Good practice or not to close the file before System.exit(1)? Patricia Shanahan <pats@acm.org> - 2011-04-22 05:09 -0700
        Re: Good practice or not to close the file before System.exit(1)? Lew <noone@lewscanon.com> - 2011-04-22 09:39 -0400
          Re: Good practice or not to close the file before System.exit(1)? Merciadri Luca <Luca.Merciadri@student.ulg.ac.be> - 2011-04-23 13:20 +0200
    Re: Good practice or not to close the file before System.exit(1)? Merciadri Luca <Luca.Merciadri@student.ulg.ac.be> - 2011-04-22 16:37 +0200
  Re: Good practice or not to close the file before System.exit(1)? Patricia Shanahan <pats@acm.org> - 2011-04-22 04:55 -0700
  Re: Good practice or not to close the file before System.exit(1)? Merciadri Luca <Luca.Merciadri@student.ulg.ac.be> - 2011-04-22 13:56 +0200
    Re: Good practice or not to close the file before System.exit(1)? Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-04-22 09:36 -0300
    Re: Good practice or not to close the file before System.exit(1)? markspace <-@.> - 2011-04-22 08:20 -0700
      Re: Good practice or not to close the file before System.exit(1)? Patricia Shanahan <pats@acm.org> - 2011-04-22 09:04 -0700
        Re: Good practice or not to close the file before System.exit(1)? markspace <-@.> - 2011-04-22 15:24 -0700
          Re: Good practice or not to close the file before System.exit(1)? markspace <-@.> - 2011-04-22 18:11 -0700
            Re: Good practice or not to close the file before System.exit(1)? markspace <-@.> - 2011-04-23 08:25 -0700
      Re: Good practice or not to close the file before System.exit(1)? Merciadri Luca <Luca.Merciadri@student.ulg.ac.be> - 2011-04-22 18:55 +0200
        Re: Good practice or not to close the file before System.exit(1)? Lew <noone@lewscanon.com> - 2011-04-22 13:40 -0400
        Re: Good practice or not to close the file before System.exit(1)? Patricia Shanahan <pats@acm.org> - 2011-04-22 10:55 -0700
          Re: Good practice or not to close the file before System.exit(1)? Merciadri Luca <Luca.Merciadri@student.ulg.ac.be> - 2011-04-22 22:58 +0200
            Re: Good practice or not to close the file before System.exit(1)? Merciadri Luca <Luca.Merciadri@student.ulg.ac.be> - 2011-04-22 23:09 +0200
              Re: Good practice or not to close the file before System.exit(1)? Patricia Shanahan <pats@acm.org> - 2011-04-22 14:30 -0700
                Re: Good practice or not to close the file before System.exit(1)? markspace <-@.> - 2011-04-22 15:38 -0700
                Re: Good practice or not to close the file before System.exit(1)? Patricia Shanahan <pats@acm.org> - 2011-04-22 17:00 -0700
                Re: Good practice or not to close the file before System.exit(1)? Lew <noone@lewscanon.com> - 2011-04-22 22:10 -0400
                Re: Good practice or not to close the file before System.exit(1)? Patricia Shanahan <pats@acm.org> - 2011-04-22 19:46 -0700
                Re: Good practice or not to close the file before System.exit(1)? Lew <noone@lewscanon.com> - 2011-04-23 09:54 -0400
  Re: Good practice or not to close the file before System.exit(1)? Roedy Green <see_website@mindprod.com.invalid> - 2011-04-22 12:45 -0700
    Re: Good practice or not to close the file before System.exit(1)? Merciadri Luca <Luca.Merciadri@student.ulg.ac.be> - 2011-04-22 23:20 +0200

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