Convertion RTF to PDF

[Paulo Carvalho]

Hello

In my application I want to write a method that converts a RTF file to a PDF file.

I have searched on Internet to know how I could do that and I found several ways to do it:
- using openoffice
- using PDFCreator
- using PDFPrinter
- using JEditorPane (but it seems that only works for simple RTF files)
- converting RTF to FO and then FO to PDF

So, I would like some help to choose between these options (if its free, its better) or to indicate another and/or better way of doing this...

Please help me.

Thank you

Regards