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From "Gary Gregory (JIRA)" <>
Subject [jira] Commented: (LANG-382) Retrieve Directory File List in Timestamp Order
Date Tue, 04 Dec 2007 21:28:43 GMT


Gary Gregory commented on LANG-382:

This seems more appropriate a suggestion for Commons-IO, perhaps as an addition to the class

> Retrieve Directory File List in Timestamp Order
> -----------------------------------------------
>                 Key: LANG-382
>                 URL:
>             Project: Commons Lang
>          Issue Type: New Feature
>         Environment: Java SE 5.  Windows and SuSe Linux.
>            Reporter: Al Scherer
> I searched your current Commons-Lang issues/feature requests and did not find the following
so I'd like to propose it as a feature request.
> Given a filename filter and dir name, the new method would return a List<File>
of the files that match the filter in last-modified timestamp order.  
> I've not found code out there that does this.  
> Sun explicitly does not - from the Sun Java SE 5 API Javadocs, File's listFiles() method
descriptions include the following disclaimer:
>         "There is no guarantee that the name strings in the resulting array will appear
in any specific order; they are not, in particular, guaranteed to appear in alphabetical order."
> I needed the files in last-modified order so I wrote code to do it.  I would be glad
to share the code with the commons project if you feel it would be worthwhile.  The signature
would be:
> - public List<File> getFileListModifiedTimestampOrder(FilenameFilter filter, String
> I've already written, tested and used code to do this.
> There are additional flavors that might be worthwhile, too.
> - public List<File> getFileListModifiedTimestampOrderReversed(FilenameFilter filter,
String dirName)
> - public List<File> getFileListNameOrder(FilenameFilter filter, String dirName)
> - public List<File> getFileListNameOrderReversed(FilenameFilter filter, String

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