change files location

2020-07-03 23:56:52 +02:00
parent be5c52bd3b
commit 8f22ea5d36
6 changed files with 4 additions and 120 deletions
@@ -0,0 +1,34 @@
+package com.baeldung.poi.excel.setFormula;
+
+import org.apache.poi.ss.usermodel.CellValue;
+import org.apache.poi.xssf.usermodel.XSSFCell;
+import org.apache.poi.xssf.usermodel.XSSFFormulaEvaluator;
+import org.apache.poi.xssf.usermodel.XSSFSheet;
+import org.apache.poi.xssf.usermodel.XSSFWorkbook;
+
+import java.io.IOException;
+import java.util.List;
+
+public class ExcelFormula {
+    XSSFWorkbook excel;
+    public XSSFSheet inserData(List<Integer> dataList) {
+        excel = new XSSFWorkbook();
+        XSSFSheet sheet = excel.createSheet();
+        int rowNum =0 ;
+        for (Integer data : dataList){
+            sheet.createRow(rowNum++).createCell(0).setCellValue(data);
+        }
+        return sheet;
+    }
+    public double setFormula(String formula) throws IOException {
+        XSSFSheet sheet = excel.getSheetAt(0);
+        int lastCellNum = sheet.getRow(0).getLastCellNum();
+        XSSFCell formulaCell = sheet.getRow(0).createCell(lastCellNum + 1);
+        formulaCell.setCellFormula(formula);
+        XSSFFormulaEvaluator formulaEvaluator = excel.getCreationHelper().createFormulaEvaluator();
+        CellValue evaluate = formulaEvaluator.evaluate(formulaCell);
+        if(excel != null)
+            excel.close();
+        return evaluate.getNumberValue();
+    }
+}