how i can extract text from the power point files,Ms word files,pdf files?

hi friends,
i need to extract text from the power point files,word files,pdf files for my application.Is it possible to extract the text from the those files .If yes plz give solution to this problem.i would be thankful if u givve solution to this problem.

These are proprietary formats, so you will have to likely purchase a plugin or similar software from the respective vendors (Microsoft, Adobe..)

There might be non-commercial means as well.

To read Mirosoft Word/Excel files

To read PDF files
[ October 26, 2005: Message edited by: Chetan Parekh ]

Extrapolating from Chetans post:

links to all kinds of document processing libraries, including Word, Excel, PowerPoint, PDF, ...
[ October 26, 2005: Message edited by: Ulf Dittmer ]

Hi,

I use AntiWord, for read text from word file. It is the fastest.
Itext for PDF. It is very slow.

Thanks