HSSF eventmodel Package provides an event-based API for reading HSSF files.
Related Documentation
The event model can reald XLS files with a very small memory footprint. For
writing you still have to use the usermodel. The eventmodel is to the usermodel
what SAX is to DOM.
For overviews, tutorials, examples, guides, and tool documentation, please see:
A HSSFListener which tracks rows and columns, and will
trigger your HSSFListener for all rows and cells,
even the ones that aren't actually stored in the file.
This allows your code to have a more "Excel" like
view of the data in the file, and not have to worry
(as much) about if a particular row/cell is in the
file, or was skipped from being written as it was
blank.