https://bz.apache.org/bugzilla/show_bug.cgi?id=69473
Bug ID: 69473 Summary: SetCellStyle on DeferredSXSSFWorkbook is not working Product: POI Version: 5.3.0-FINAL Hardware: PC Status: NEW Severity: normal Priority: P2 Component: SXSSF Assignee: dev@poi.apache.org Reporter: stepan.cerve...@aimtecglobal.com Target Milestone: --- Created attachment 39943 --> https://bz.apache.org/bugzilla/attachment.cgi?id=39943&action=edit Contains generated file.xlsx, file2.xlsx and error produced by file2.xlsx This method creates valid xlsx file: public void get() { try(OutputStream os = new FileOutputStream("C:\\excel\\file.xlsx"); var workbook = new DeferredSXSSFWorkbook(100)) { var outerSheet = workbook.createSheet(); outerSheet.setRowGenerator(sheet -> { var row = sheet.createRow(0); var cell = row.createCell(0); cell.setCellValue("Hello"); var cell2 = row.createCell(1); cell2.setCellValue("World"); }); workbook.writeAvoidingTempFiles(os); workbook.dispose(); } catch (IOException e) { throw new RuntimeException(e); } } This method generates corrupted xlsx file. public void get2() { try(OutputStream os = new FileOutputStream("C:\\excel\\file2.xlsx"); var workbook = new DeferredSXSSFWorkbook(100)) { var outerSheet = workbook.createSheet(); outerSheet.setRowGenerator(sheet -> { var row = sheet.createRow(0); var cell = row.createCell(0); cell.setCellStyle(getBoldStyle(workbook)); cell.setCellValue("Hello"); var cell2 = row.createCell(1); cell2.setCellValue("World"); }); workbook.writeAvoidingTempFiles(os); workbook.dispose(); } catch (IOException e) { throw new RuntimeException(e); } } private CellStyle getBoldStyle(DeferredSXSSFWorkbook workbook) { var font = workbook.createFont(); font.setBold(true); var style = workbook.createCellStyle(); style.setFont(font); return style; } It's possible the error is caused by czech locale on windows. -- You are receiving this mail because: You are the assignee for the bug. --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@poi.apache.org For additional commands, e-mail: dev-h...@poi.apache.org