Setting filter on headers of an Excel sheet via POI

Question

I generate a sheet, pretty bog standard headers and columns of data.

I want to turn on the \"Filter\" function for the sheet, so the user can easily sort and filter the

Answer 1

easiest way of adding filter on header :

sheet.setAutoFilter(new CellRangeAddress(0, 0, 0, numColumns));
sheet.createFreezePane(0, 1);