How to insert header for every page in a document using apache poi?

Question

I need to read a document and write its content to another file. For this i am using apache poi (getText)which prints the header once at the starting page only. i need to read all the headers at all pages and write to the corresponding file. Is there a way to get all the headers page by page? Also i need to print the page numbers dynamically in to the header.How can i get page numbers with apache poi? Please help.

Thanks,
Ramya.