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Groups > comp.lang.java.programmer > #6743

Re: Catching mulitple Exceptions in JDK 1.7

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On Mon, 1 Aug 2011 23:54:34 -0700 (PDT), Lew <lewbloch@gmail.com>
wrote, quoted or indirectly quoted someone who said :

>
>In fact, if you only want to handle the IOException-ness of the exception, =
>you wouldn't even bother mentioning 'SQLException' at all.  You'd just 'cat=
>ch(IOException...)'. =20

Here is a better example to illustrate my question:

catch (IllegalArgumentException|IOException ex)

What is the compile-time type of ex?

What is the run-time type of ex if you got an
IllegalArgumentException?

What is the run-time type of ex if you got an IOException ?

There may be more grown-up terms for "compile time type" and "run time
type", but I think you know what I mean.

Or is there a rule that catch (a | b ex ) requires a to be a subclass
of b, which would neatly sidestep the problem, but then the feature
would not do anything useful.
-- 
Roedy Green Canadian Mind Products
http://mindprod.com
Most of computer code is for telling the computer
what do if some very particular thing goes wrong. 

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Catching mulitple Exceptions in JDK 1.7 Roedy Green <see_website@mindprod.com.invalid> - 2011-07-29 09:14 -0700
  Re: Catching mulitple Exceptions in JDK 1.7 Roedy Green <see_website@mindprod.com.invalid> - 2011-07-29 09:18 -0700
    Re: Catching mulitple Exceptions in JDK 1.7 markspace <-@.> - 2011-07-29 09:28 -0700
  Re: Catching mulitple Exceptions in JDK 1.7 Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2011-07-31 10:48 +0300
    Re: Catching mulitple Exceptions in JDK 1.7 Lew <lewbloch@gmail.com> - 2011-08-01 23:54 -0700
      Re: Catching mulitple Exceptions in JDK 1.7 Roedy Green <see_website@mindprod.com.invalid> - 2011-08-02 06:56 -0700
        Re: Catching mulitple Exceptions in JDK 1.7 Patricia Shanahan <pats@acm.org> - 2011-08-02 14:07 -0700
          Re: Catching mulitple Exceptions in JDK 1.7 supercalifragilisticexpialadiamaticonormalizeringelimatisticantations <supercalifragilisticexpialadiamaticonormalizeringelimatisticantations@averylongandannoyingdomainname.com> - 2011-08-03 23:31 -0400
            Re: Catching mulitple Exceptions in JDK 1.7 Patricia Shanahan <pats@acm.org> - 2011-08-03 21:03 -0700
          Re: Catching mulitple Exceptions in JDK 1.7 Jeff Higgins <jeff@invalid.invalid> - 2011-08-05 19:02 -0400
            Re: Catching mulitple Exceptions in JDK 1.7 Patricia Shanahan <pats@acm.org> - 2011-08-06 09:45 -0700
        Re: Catching mulitple Exceptions in JDK 1.7 Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2011-08-03 00:11 +0300

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