loading a new font

I want to generate a PDF document from a servlet.
When I load a new font from my servlet, I use the "userconfig.xml" file.
I put my font on a server. This file is very huge so the PDF generation
takes me lots of time.
I aim to decrease this time.

So, I need to know if :
- the font is loaded with each servlet's call and,
- if so, is it possible to load it one only time on the server to improve
the speed of PDF generation ?
- and if so, how can I do that ?

If someone can help me ?
S. Peyronny