ImageIO.write success on one pc, failure on another...

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tiewknvc9 - 15 Nov 2006 04:08 GMT

hi!

Im trying to have my java desktop <i> application </i> write images out
to a file. This works successfully on numerous PCs... and fails on
numerous PCs.

The odd thing is that it is the same exact code, and the same exact
virtual machine! I wish I could develop on one of the machines that it
is failing on, but I can't.

my code is...

iImageCount = 1; //example
File filImg = new File("/temp/myImage" + iImageCount + ".png");
ImageIO.write(renImage, "png", filImg);

the error that comes up is a fileNotFoundException! I tried to add in
filImg.createNewImage(), but that causes problems on the computers that
it is currently working on.

any clue as to where I should begin to figure out an answer?

Thanks!

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Ye Dafeng - 15 Nov 2006 05:31 GMT

> hi!
>
[quoted text clipped - 19 lines]
>
> Thanks!

I think you should use the File.seperator, because in different os, the
file separator is different

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Andrew Thompson - 15 Nov 2006 08:04 GMT

...

> > Im trying to have my java desktop <i> application </i>

Usenet readers do not understand HTML, whereas
'usenet format' is more like /italic/ or *bold*.
...

> > my code is...
> >
> > iImageCount = 1; //example
> > File filImg = new File("/temp/myImage" + iImageCount + ".png");
> > ImageIO.write(renImage, "png", filImg);

This code is very haphazzard, it is no surprise to me
that it fails.

> > the error that comes up is a fileNotFoundException!

...

> I think you should use the File.seperator,

Good call, that is also available as
System.getProperty("file.separator"),
..also look into..
"java.io.tmpdir"

And file constructor File(File parent, String name),
which allows you to ignore file.separator, and..

..oh, yeah. What Missaka was saying, check each
dir/file along the way,
- does it exit?
- is it writable?

Andrew T.

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Missaka Wijekoon - 15 Nov 2006 07:11 GMT

> hi!
>
[quoted text clipped - 19 lines]
>
> Thanks!

Is it possible that "/temp" does not exist on the machines that fail?
Or perhaps you lack permission to write to that directory.

-Missaka

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ImageIO.write success on one pc, failure on another...

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