Yeeehaa! It's done. Was easier than thought
I used Apache's
Jakarta POI to parse the excel file from our partner company to get a
list of keys we shall sort into separate categories. The initial read of the
the original excel files fails, as there is an image embedded in the file,
what obviously causes a ClassCastException while the single Cells are sorted
into a TreeMap, while it's sorting in the new added Entry.
Maybe, when I've time, I'll fix this and submit some classes, also if I don't
believe... As always when I'm saying such things I never find time :-(