Sorting a directory content by last modify date

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J_Zanetti - 29 Jan 2007 11:12 GMT

Hello everyone,

Im trying to sort the content of a directory (a file list) according
to the lastModified attribute of the object.
I get the array of files in this way:

File file = new File(directoryname);
String listoffile[] = file.list();

I would like that this listoffile[] array contains the files sorted by
its lastModified date...
is there any way to do that?

thanks everyone who can help me :)

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Andrew Thompson - 29 Jan 2007 11:39 GMT

> Im trying to sort the content of a directory (a file list) according
> to the lastModified attribute of the object.

...

> I would like that this listoffile[] array contains the files sorted by
> its lastModified date...
> is there any way to do that?

Create a suitable java.util.Comparator. Read the
JDocs for same, to see some ways to sort them.

HTH

Andrew T.

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voorth - 29 Jan 2007 12:53 GMT

> ..
>
[quoted text clipped - 5 lines]
> > is there any way to do that?Create a suitable java.util.Comparator. Read the
> JDocs for same, to see some ways to sort them.

It might also be a good idea to use File.listFiles() instead of
File.list(). Processing a File array instead of a String array will
make your Comparator a lot simpler...

Henk van Voorthuijsen

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J_Zanetti - 29 Jan 2007 13:18 GMT

>It might also be a good idea to use File.listFiles() instead of
> File.list(). Processing a File array instead of a String array will
> make your Comparator a lot simpler...

Thank to both of you that answered...I used comparator with array of
files and it works greatly ;)
Thank so much :)

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Patricia Shanahan - 29 Jan 2007 14:38 GMT

> Hello everyone,
>
[quoted text clipped - 10 lines]
>
> thanks everyone who can help me :)

I think you are making a mistake in using file.list directly. You would
do better to use file.listFiles. You could sort the resulting File[]
according to lastModified() result, and then extract the names in the
right order.

Patricia

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Sorting a directory content by last modify date

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