you should use the
Apache POI library[
^]. That one can "translate" MS Office documents into Java readable stuff.
They have a part POI-HSSF and POI-XSSF in there that is responsable for Excel Documents:
http://poi.apache.org/spreadsheet/index.html[
^].
Please check out the menu on the left side there, they have several tutorials, Examples and much more to get into it.