How can I access the properties of Microsoft files (excel, ppt, and word)

Hi,
How can I access the properties of common Microsoft file formats (Excel, Word, and Powerpoint) from a Java program. You can access/modify the properties of each document type using File->Properties in each MS application. The properties are essentially name/value pairs.
Basically, I need to write a java program that scans a directory and accesses the properties in each of the MS files in the directory.
thanks,
-john

By api. That is only way to establish a contract with the MS programs you want to interface with, unless you write an api yourself! I've used POI and it was an awesome way to use Excel in java. I created an excel spreadsheet from the results of a sql query from a batch program and then it was automatically emailed using javamail to my client. I had a lot of VBA experience with Excel, Word, and Outlook and it didn't take me long to get used to using Jakarta-POI.
Now I see there is Jakarta-POI-HWPF which works with MS Word documents. Go to: http://jakarta.apache.org/poi/

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