Processing MS Office documents with Java

My team came across a solution which allows to:

- convert XLS+DOC+PPT to PDF
- replace strings in DOC files
- read/write Excel files using simplified aAPI like getCell and setCell
- hide sheets in Excel files(hide secondary calculations for example)

Available on this website: dancrintea.ro/xls-to-pdf/

The only downside is that it needs OpenOffice,
but hey..... a lot of nice things things are possible this way.
Can you please share your tools and experience on processing MS Office documents with Java?

Hi,
I am also confused on this matter because there are many peoples which can provide this type of services.

if you have any site about this matter which one is good for you and me so please let me know.

Thanks !!!