Apply font to java dynamic project eclipse

Hello!

I have the following three TTF (true type font) Files : 

1. CelesteSansOT.ttf
2. CelesteSansOT-Bold.ttf
3. CelesteSansOT-It.ttf

I have installed the new font on jasper going to : tools -> options -> fonts  and then install fonts.

After selecting the new installed font (CelesteSansOT) , I click to Export as extension to get .jar. 

Finally, i have included this .jar on the classpath of my java web dynamic project. The problem that I don't see any change on the font of my generated pdf.

How can I solve this problem? Can someone help? Thanks in advance.