link from servlet to servlet

I have a servlet that writes html reports. I have another servlet that creates a PDF file of the report. in the html servlet i have a <a href=""></a> link that I want to use to call the PDF servlet. My question is what is the path I should be using to link from one servlet to another?

Thanks

[317 byte] By [morningJavaa] at [2007-11-27 9:54:32]