Groups > comp.lang.java.programmer > #18661

Re: can't throw

Date	2012-09-11 21:14 -0400
From	Arne Vajhøj <arne@vajhoej.dk>
Newsgroups	comp.lang.java.programmer
Subject	Re: can't throw
References	<19af6b94-7a1e-4491-afb2-79782406f560@googlegroups.com>
Message-ID	<504fe210$0$293$14726298@news.sunsite.dk> (permalink)
Organization	SunSITE.dk - Supporting Open source

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On 9/11/2012 4:16 PM, bob smith wrote:
> Am I the only one who wanted to throw an Exception but couldn't because I was overriding
> a method that threw nothing?
>
> In particular, I'm subclassing Thread and can't throw an Exception in the run method.  I suspect this is a more general issue though.

You are not the first with that problem.

My take is:
* if the API is well designed the the intent must be that the class
   is supposed to handle the problems and not throw an exception
   at all, and you should follow that guideline
* if the API is not well designed and someone just forgot about
   exceptions, then you must consider what is best:
   - change the API with all the problems arising from that
   - throw a runtime exception

Arne

Thread

can't throw bob smith <bob@coolfone.comze.com> - 2012-09-11 13:16 -0700
  Re: can't throw markspace <-@.> - 2012-09-11 13:34 -0700
    Re: can't throw Lew <lewbloch@gmail.com> - 2012-09-11 14:15 -0700
  Re: can't throw Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-09-11 17:02 -0400
    Re: can't throw Lew <lewbloch@gmail.com> - 2012-09-11 14:17 -0700
      Re: can't throw Arne Vajhøj <arne@vajhoej.dk> - 2012-09-11 21:21 -0400
        Re: can't throw Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2012-09-11 21:59 -0700
          Re: can't throw Gene Wirchenko <genew@ocis.net> - 2012-09-12 09:18 -0700
            Re: can't throw Robert Klemme <shortcutter@googlemail.com> - 2012-09-12 19:09 +0200
            Re: can't throw markspace <-@.> - 2012-09-12 10:56 -0700
            Re: can't throw Arne Vajhøj <arne@vajhoej.dk> - 2012-09-12 18:36 -0400
              Re: can't throw Gene Wirchenko <genew@ocis.net> - 2012-09-12 18:29 -0700
                Re: can't throw Patricia Shanahan <pats@acm.org> - 2012-09-12 18:34 -0700
                Re: can't throw Arne Vajhøj <arne@vajhoej.dk> - 2012-09-12 21:37 -0400
                Re: can't throw Arne Vajhøj <arne@vajhoej.dk> - 2012-09-12 21:54 -0400
          Re: can't throw Jim Janney <jjanney@shell.xmission.com> - 2012-09-12 11:27 -0600
          Re: can't throw Arne Vajhøj <arne@vajhoej.dk> - 2012-09-12 18:24 -0400
            Re: can't throw Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2012-09-13 22:20 -0700
              Re: can't throw Gene Wirchenko <genew@ocis.net> - 2012-09-14 09:49 -0700
                Re: can't throw Robert Klemme <shortcutter@googlemail.com> - 2012-09-14 20:50 +0200
                Re: can't throw Lew <lewbloch@gmail.com> - 2012-09-14 13:02 -0700
                Re: can't throw Gene Wirchenko <genew@ocis.net> - 2012-09-14 14:06 -0700
                Re: can't throw Gene Wirchenko <genew@ocis.net> - 2012-09-14 13:16 -0700
                Re: can't throw Robert Klemme <shortcutter@googlemail.com> - 2012-09-14 23:07 +0200
                Re: can't throw Lew <lewbloch@gmail.com> - 2012-09-14 14:28 -0700
                Re: can't throw Gene Wirchenko <genew@ocis.net> - 2012-09-16 20:04 -0700
        Re: can't throw Arne Vajhøj <arne@vajhoej.dk> - 2012-09-12 18:16 -0400
          Re: can't throw Lew <lewbloch@gmail.com> - 2012-09-12 23:15 -0700
        Re: can't throw Leif Roar Moldskred <leifm@dimnakorr.com> - 2012-09-14 17:33 -0500
          Re: can't throw Robert Klemme <shortcutter@googlemail.com> - 2012-09-16 15:46 +0200
            Re: can't throw Leif Roar Moldskred <leifm@dimnakorr.com> - 2012-09-16 12:17 -0500
              Re: can't throw Robert Klemme <shortcutter@googlemail.com> - 2012-09-16 22:36 +0200
                Re: can't throw Gene Wirchenko <genew@ocis.net> - 2012-09-16 20:07 -0700
                Re: can't throw Robert Klemme <shortcutter@googlemail.com> - 2012-09-17 07:41 +0200
                Re: can't throw Gene Wirchenko <genew@ocis.net> - 2012-09-17 09:51 -0700
                Re: can't throw Robert Klemme <shortcutter@googlemail.com> - 2012-09-17 21:00 +0200
                Re: can't throw Gene Wirchenko <genew@ocis.net> - 2012-09-17 13:23 -0700
                Re: can't throw Joerg Meier <joergmmeier@arcor.de> - 2012-09-17 18:52 +0200
                Re: can't throw Lew <lewbloch@gmail.com> - 2012-09-17 11:22 -0700
                Re: can't throw Leif Roar Moldskred <leifm@dimnakorr.com> - 2012-09-17 02:52 -0500
                Re: can't throw Leif Roar Moldskred <leifm@dimnakorr.com> - 2012-09-17 02:39 -0500
                Re: can't throw Robert Klemme <shortcutter@googlemail.com> - 2012-09-17 21:02 +0200
  Re: can't throw markspace <-@.> - 2012-09-11 14:28 -0700
  Re: can't throw Arne Vajhøj <arne@vajhoej.dk> - 2012-09-11 21:14 -0400
    Re: can't throw Arne Vajhøj <arne@vajhoej.dk> - 2012-09-12 18:11 -0400
  Re: can't throw Robert Klemme <shortcutter@googlemail.com> - 2012-09-12 08:31 +0200
    Re: can't throw bob smith <bob@coolfone.comze.com> - 2012-09-12 11:40 -0700
      Re: can't throw Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-09-12 15:50 -0400
      Re: can't throw Lew <lewbloch@gmail.com> - 2012-09-12 12:52 -0700
        Re: can't throw Robert Klemme <shortcutter@googlemail.com> - 2012-09-12 23:24 +0200
          Re: can't throw Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2012-09-12 15:10 -0700
            Re: can't throw Robert Klemme <shortcutter@googlemail.com> - 2012-09-13 23:32 +0200
    Re: can't throw Arne Vajhøj <arne@vajhoej.dk> - 2012-09-12 18:06 -0400
  Re: can't throw Roedy Green <see_website@mindprod.com.invalid> - 2012-09-12 20:55 -0700

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