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How do you close the stream with Files.write?

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  How do you close the stream with Files.write? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2016-10-19 15:55 -0500
    Re: How do you close the stream with Files.write? Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-10-19 17:07 -0400
      Re: How do you close the stream with Files.write? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2016-10-19 16:12 -0500

#35828 — How do you close the stream with Files.write?

java.nio.file.Files(Path path, Iterable<? extends CharSequence> lines, 
OpenOption... options) appears to have no way to close the underlying 
stream?

Thanks,

-- 

Knute Johnson

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#35829

On 10/19/2016 4:55 PM, Knute Johnson wrote:
> java.nio.file.Files(Path path, Iterable<? extends CharSequence> lines,
> OpenOption... options) appears to have no way to close the underlying
> stream?

     (I guess there's a `write' missing before the parameters.)

     Looks like the file auto-closes at the end of the operation.  From
the JavaDoc for the three-parameter write():

	This method works as if invoking it were equivalent to
	evaluating the expression:

	Files.write(path, lines, StandardCharsets.UTF_8, options);

... and the JavaDoc for the latter says

	[...] The method ensures that the file is closed when all lines
	have been written (or an I/O error or other runtime exception
	is thrown). [...]

     So it appears you're only in trouble if you want the stream
to remain open.

-- 
esosman@comcast-dot-net.invalid
"Don't be afraid of work. Make work afraid of you." -- TLM

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#35831

On 10/19/2016 16:07, Eric Sosman wrote:
> On 10/19/2016 4:55 PM, Knute Johnson wrote:
>> java.nio.file.Files(Path path, Iterable<? extends CharSequence> lines,
>> OpenOption... options) appears to have no way to close the underlying
>> stream?
>
>     (I guess there's a `write' missing before the parameters.)
>
>     Looks like the file auto-closes at the end of the operation.  From
> the JavaDoc for the three-parameter write():
>
>     This method works as if invoking it were equivalent to
>     evaluating the expression:
>
>     Files.write(path, lines, StandardCharsets.UTF_8, options);
>
> ... and the JavaDoc for the latter says
>
>     [...] The method ensures that the file is closed when all lines
>     have been written (or an I/O error or other runtime exception
>     is thrown). [...]
>
>     So it appears you're only in trouble if you want the stream
> to remain open.
>

Thanks Eric, I missed that as I was looking at the docs for the other 
write method.  I did look in the source and it is clearly closed there.

-- 

Knute Johnson

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