How to set formulas in cells using Apache POI?

Question

I am currently using Apache POI for Java to set formulas in cells.

But after I run the program and open the Excel file that I created and processed, the cells with t

Answer 1

Cell Constants are deprecated and will be removed from version 4.0 instead of Cell Use

CellType.FORMULA

String formula= "SUM(B4:B20)";
cell.setCellType(CellType.FORMULA);
cell.setCellFormula(formula);