Got this from dev@openoffice.apache.org:
For Microsoft formats, including XLS, a good option is Apache POI:
And for ODF spreadsheet files as used in OpenOffice you can try the ODF Toolkit:
Question
What does open office use for importing xls files and csv files. Is it a library (or a body of code that can be easily packaged) that I could use in my project for importing xls and csv files? I'm building an analytics app and looking for a robust way to import xls and csv files.
Solution
Got this from dev@openoffice.apache.org:
For Microsoft formats, including XLS, a good option is Apache POI:
And for ODF spreadsheet files as used in OpenOffice you can try the ODF Toolkit: