Display a pdf page, JSF

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i have uploaded fies to a server, and what i want to do is now some how display these on the xhtml page, but i only want to display the pdf files

currently i have

<p:media value="/resources/pdf/F86.pdf" width="125%" height="100%">

but obviously this will only display the file in the value section, but what i want to try and do is create a way where it go into the directory and select a pdf file in that folder, how would i do this, what are the features i need to research in order to complete this task, i am new so sorry if this is a simple question