I have a Word document(some template format) where it containing some placeholders for the data to be filled in and there are several Word documents like this which lies in some directory. When data comes I will be choosing different templates (based on some criteria) and fill the data and the documents have to be converted to PDF format.
I have been investigating Apache POI for this. If anyone has a good suggestion, it would be much appreciated.
As mbeckish mentioned you should indicate how you are going to run/automate this. For example is it one-off, run by hand or part of another program (and if so what programming languages do you use)?
If you are trying to automate it JODReports and Docmosis are tools that can use templates like you require and can produce PDF. JODReports is free. Docmosis is not but has several APIs. Please note I work for the company that develops Docmosis.
Hope that helps.