API to write huge excel files using java

Question

I am looking to write to an excel (.xls MS Excel 2003 format) file programatically using Java. The excel output files may contain ~200,000 rows which I plan to split over n

Answer 1

Have a look at the HSSF serializer from the cocoon project.

The HSSF serializer catches SAX events and creates a spreadsheet in the XLS format used by Microsoft Excel