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I am filling cells of an Excel file using Apache POI, and there are a lot of formula cells in the document. However, their values are not refreshed when I open the document in Excel.
It's my understanding that I need to use a FormulaEvaluator to refresh formula cells. Is there a way, though, to update all formula cells at once? There are a lot of them, and while making an exhaustive list is not out of question, it's certainly not something I'm very willing to do.
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HSSF is the POI Project's pure Java implementation of the Excel '97(-2007) file format. XSSF is the POI Project's pure Java implementation of the Excel 2007 OOXML (. xlsx) file format. HSSF and XSSF provides ways to read spreadsheets create, modify, read and write XLS spreadsheets.
Sure. Refreshing all the formulas in a workbook is possibly the more typical use case anyway.
If you're using HSSF, call evaluatorAllFormulaCells:
HSSFFormulaEvaluator.evaluateAllFormulaCells(hssfWorkbook) If you're using XSSF, call evaluatorAllFormulaCells:
XSSFFormulaEvaluator.evaluateAllFormulaCells(xssfWorkbook) More details are available on the poi website
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wb.setForceFormulaRecalculation(true); // replace "wb" with your HSSFWorkbook/XSSFWorkbook object https://poi.apache.org/apidocs/org/apache/poi/hssf/usermodel/HSSFWorkbook.html#setForceFormulaRecalculation-boolean-
https://poi.apache.org/apidocs/org/apache/poi/xssf/usermodel/XSSFWorkbook.html#setForceFormulaRecalculation-boolean-
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