Cell grouping for Apache POI: is there a way to get the plus at the top instead of the bottom?

Question

I'm using Apache POI and I want to group some cells together. However, the expansion icon shows up 1 cell below instead of 1 cell above . Is there any way to fix this?

In excel, I would click on the "outline" advance options and uncheck the "Summary rows below detail" option to fix this issue usually. Any help would be appreciated.

Answer 1

您可以在Sheet / XSSFSheet上使用以下方法

sheet.setRowSumsBelow(false);