Filter files by extension on browse windows

Hi,
in a servlet I have a form where I can upload files from the hard disk. There is the classic "Browse" button. When I click on it I can choose the file on a browsing windows.
I want to limit the choose of the file only to pdf files.
How can I make it to show only pdf files?
Thanks, bye
Carlo

I don't think you can do this. I could be wrong, but I've never seen it done. Your Java is running on the server and what you're talking about is controlling something on the client. Anyway, if it is possible to do what you're trying to do, it wouldn't be something you do in Java.

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