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Groups > comp.lang.java.programmer > #10596
| Newsgroups | comp.lang.java.programmer |
|---|---|
| Subject | Re: Question re testing constructor |
| References | <Xns9FB3682A7DBF6jpnasty@94.75.214.39> <jblc1i$n6u$1@dont-email.me> <null-20111206201830@ram.dialup.fu-berlin.de> <Xns9FB3B1EDDE309vaj4088ianshef@138.125.254.103> <unreachable-code-20111207032302@ram.dialup.fu-berlin.de> |
| From | ilAn <idonot@wantspam.net> |
| Date | 2011-12-07 20:41 +0200 |
| Message-ID | <m2iplsql6l.fsf@wantspam.net> (permalink) |
ram@zedat.fu-berlin.de (Stefan Ram) writes:
> Ian Shef <invalid@avoiding.spam> writes:
>>ram@zedat.fu-berlin.de (Stefan Ram) wrote in news:null-20111206201830
>>@ram.dialup.fu-berlin.de:
>>>If the Java compiler is so smart at detecting null values,
>>>why does he not also give an error on code like:
>>>(( java.io.PrintStream )null ).println()
>>>?
>>Short answer: Because the JLS says so. (see the third edition, paragraph
>>15.16 where it is explained that most casts are handled at run time).
>
> Something similar:
>
> It is difficult for me to forecast an »unreachable statement« error.
> For example, I would have expected such an error for
>
> public class Main
> { public static void main( final java.lang.String[] args )
> { java.lang.System.out.println( "alpha3" );
> if( true )return;
> java.lang.System.out.println( "beta3" ); }}
>
> , but did *not* get one, however, the compiler knows that the
> beta3 statement *is* unreachable, because he does not care to
> compile it.
>
> Omitting the »if( true )« will give an »unreachable statement«
> error.
I find that quite useful, when I am debugging and want to exclude a
bunch of code.. and still compile it.
--
ilAn
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Question re testing constructor Novice <novice@example..com> - 2011-12-06 15:14 +0000
Re: Question re testing constructor markspace <-@.> - 2011-12-06 07:23 -0800
Re: Question re testing constructor Novice <novice@example..com> - 2011-12-06 17:17 +0000
Re: Question re testing constructor Tom Anderson <twic@urchin.earth.li> - 2011-12-06 21:25 +0000
Re: Question re testing constructor Ian Shef <invalid@avoiding.spam> - 2011-12-07 00:29 +0000
Re: Question re testing constructor Patricia Shanahan <pats@acm.org> - 2011-12-06 19:28 -0800
Re: Question re testing constructor Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-12-06 22:57 -0600
Re: Question re testing constructor Lew <lewbloch@gmail.com> - 2011-12-07 07:12 -0800
Re: Question re testing constructor Lew <lewbloch@gmail.com> - 2011-12-07 07:14 -0800
Re: Question re testing constructor Ian Shef <invalid@avoiding.spam> - 2011-12-07 15:59 +0000
Re: Question re testing constructor Ian Shef <invalid@avoiding.spam> - 2011-12-08 19:19 +0000
Re: Question re testing constructor ilAn <idonot@wantspam.net> - 2011-12-07 20:41 +0200
Re: Question re testing constructor Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2011-12-06 07:34 -0800
Re: Question re testing constructor Novice <novice@example..com> - 2011-12-06 17:15 +0000
Re: Question re testing constructor Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2011-12-06 09:49 -0800
Re: Question re testing constructor Roedy Green <see_website@mindprod.com.invalid> - 2011-12-06 16:40 -0800
Re: Question re testing constructor Henk van Voorthuijsen <voorth@xs4all.nl> - 2011-12-07 00:33 -0800
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