Apache POI Java Excel Performance for Large Spreadsheets

Question

I have a spreadsheet I\'m trying to read with POI (I have both xls and xlsx formats), but in this case, the problem is with the xls file. My spreadsheet has about 10,000 row

Answer 1

f you are using Apache POI to generate large excel file, please take note the following line :

sheet.autoSizeColumn((short) p);

Because this will degrade the performance.