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Re: unnecessary code in Oracle example?

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Arivald <arivald_@AT_interia_DOT_.pl> writes:

> W dniu 2013-10-10 07:47, Sebastian pisze:
>> Am 10.10.2013 06:42, schrieb Arivald:
>>> W dniu 2013-10-10 04:56, Jim Janney pisze:
>>>> markspace <markspace@nospam.nospam> writes:
>>>>
>>>>> On 10/9/2013 1:21 PM, Jim Janney wrote:
>>>>>> Yes, in Java 7 you can have clean syntax and clean semantics. Looks
>>>>>> like a win all around.
>>>>>>
>>>>>
>>>>> For Java 5+, with varargs you could do (not compiled):
>>> [...]
>>>>
>>>> Mmm... you're complicating the code with extra assignments and tests,
>>>> just to avoid one layer of nesting. I like the version with two
>>>> try-finally blocks, partly because the lexical structure reflects what's
>>>> happening in the code: two independent cleanups. But the Java 7 version
>>>> is better.
>>>>
>>>
>>> I wonder how Java 7 version (try-with-resources) handle exceptions...
>>> For example, if all 3 streams throw exception from close(), will it
>>> guarantee to close all of them? And how to handle such exceptions?
>>>
>> Why don't you modify markspace's example to see for yourself, e. g.
>>
>>      @Override
>>      public void close() throws IOException {
>>          System.out.println( "Trying to close "
>>             + getClass().getSimpleName()+":"+name );
>>          throw new IOException("CloseError " + name);
>>      }
>>
>> Then read what the Javadocs have to say about suppressed exceptions.
>>
>> -- Sebastian
>
>
> I read docs about suppressed exceptions. And of course I can run
> test. But still I wonder how it should behave, if there is more than
> one close-able resource, two of them raise exceptions, and there was
> no exception in main block (so no suppression).
>
> Can anyone point me to relevant doc? Google is not very helpful.

http://blog.eyallupu.com/2013/03/try-catch-resource-and.html

Something to think about when reworking old code, if anyone has time for
that.

-- 
Jim Janney

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unnecessary code in Oracle example? Jim Janney <jjanney@shell.xmission.com> - 2013-10-09 10:38 -0600
  Re: unnecessary code in Oracle example? Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2013-10-09 11:19 -0700
    Re: unnecessary code in Oracle example? ram@zedat.fu-berlin.de (Stefan Ram) - 2013-10-09 19:04 +0000
    Re: unnecessary code in Oracle example? Jim Janney <jjanney@shell.xmission.com> - 2013-10-09 13:08 -0600
      Re: unnecessary code in Oracle example? markspace <markspace@nospam.nospam> - 2013-10-09 12:27 -0700
        Re: unnecessary code in Oracle example? Jim Janney <jjanney@shell.xmission.com> - 2013-10-09 14:21 -0600
          Re: unnecessary code in Oracle example? markspace <markspace@nospam.nospam> - 2013-10-09 14:56 -0700
            Re: unnecessary code in Oracle example? Jim Janney <jjanney@shell.xmission.com> - 2013-10-09 20:56 -0600
              Re: unnecessary code in Oracle example? Arivald <NOSPAMarivald@interia.pl> - 2013-10-10 06:42 +0200
                Re: unnecessary code in Oracle example? Sebastian <news@seyweiler.dyndns.org> - 2013-10-10 07:47 +0200
                Re: unnecessary code in Oracle example? Arivald <arivald_@AT_interia_DOT_.pl> - 2013-10-10 10:26 +0200
                Re: unnecessary code in Oracle example? Jim Janney <jjanney@shell.xmission.com> - 2013-10-10 08:47 -0600
    Re: unnecessary code in Oracle example? Robert Klemme <shortcutter@googlemail.com> - 2013-10-09 21:11 +0200
      Re: unnecessary code in Oracle example? cuzdav@gmail.com - 2013-10-10 08:49 -0700

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