Can you write to a file from a vector??

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nemadrias - 01 Aug 2006 20:53 GMT

How do I write to a file (using a FileWriter) from a filled vector??

I.E. Why can't I do this??

for (i = 0; i < myVector.size(); i++){
myWriter.write(myVector.elementAt(i));
myWriter.flush();
myWriter.close();
}

Thanks,
Steve

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Oliver Wong - 01 Aug 2006 21:01 GMT

> How do I write to a file (using a FileWriter) from a filled vector??
>
[quoted text clipped - 5 lines]
> myWriter.close();
> }

You (sometimes) can't write to a writer after you've closed it.

- Oliver

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Matt Humphrey - 01 Aug 2006 21:07 GMT

> How do I write to a file (using a FileWriter) from a filled vector??
>
[quoted text clipped - 5 lines]
> myWriter.close();
> }

First, because you're closing the file after the first element. Move the
close statement to outside of the loop. Second, because write writes out a
String (or char [] or int). You must convert whatever the object is at
myVector.elementAt (i) to a String. Minimally you can use toString (), or
if it's a vector of strings you can cast to String but otherwise it should
be something intellligible. What are you expecting it to output?

Matt Humphrey matth@ivizNOSPAM.com http://www.iviz.com/

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nemadrias - 01 Aug 2006 21:13 GMT

Thanks to both of you -
I don't know how I moved the .close() statement into the loop, but
somehow overlooked it. I did a toString() and that worked fine.
Thanks alot Matt,
Steve

> > How do I write to a file (using a FileWriter) from a filled vector??
> >
[quoted text clipped - 14 lines]
>
> Matt Humphrey matth@ivizNOSPAM.com http://www.iviz.com/

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Hendrik Maryns - 02 Aug 2006 14:46 GMT

nemadrias schreef:

> Thanks to both of you -
> I don't know how I moved the .close() statement into the loop, but
> somehow overlooked it. I did a toString() and that worked fine.

Please don’t top-post.

I’d move flush outside the loop too. No need to have that much I/O.

H.

- --
Hendrik Maryns

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Can you write to a file from a vector??

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