java.util.UUID.randomUUID() ?

http://java.sun.com/j2se/1.5.0/docs/api/java/util/UUID.htm

PK

jayakumar ala wrote:
I am trying to upload multiple files in my application , So i am looking for
different approach to create unique Id for all the uploaded files. Any
suggestions are appreciated.



On Tue, Dec 15, 2009 at 1:54 PM, Gabriel Belingueres
<belingue...@gmail.com>wrote:

I use File.createTempFile:


http://java.sun.com/j2se/1.5.0/docs/api/java/io/File.html#createTempFile(java.lang.String,%20java.lang.String,%20java.io.File)

Then I relate the uploaded filename with the saved temp file name in a
database table.

Gabriel

2009/12/15 Todd Grigsby <strutsu...@tgrigsby.com>:
 > jayakumar ala wrote:
Hi All,
 I am using struts2 in my web application.
 Which is the best way to create unique Id for each file upload i do in
my
application...?

Thanks
Ala


I've always used the original filename with a time stamp, down to the
millisecond formatted with leading zeros and without separators, appended
to
the end.  If a create fails, I wait a few milliseconds and regenerate the
filename.  The nice part about the time stamp is that you have the date
and
time the file was uploaded in the name itself.

TG

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