Problem in Downloading PDF File using JSP

Hi All,

In my jsp page there is an option to download the PDF file.
If we click the appropriate link then the corresponding file is downloaded. After downloading if we select option 'open ' then AcrobatReader will open the PDF File defaultly.

My problem is, if Acrobat Reader is not installed in my system then it will not open the PDF file. And it will not asking to download Acrobat Reader Software option . How will we do this process in jsp.

Please give reply , it's very urgent.

Thanks in advance.

Mostly, I have seen many websites/webapps having the link to download the PDF file also have a link to download PDF Reader just next to the PDF file download link.

How is it?