public static void copyCell(XSSFCell oldCell, XSSFCell newCell, Map<Integer, XSSFCellStyle> styleMap) {
        if (styleMap != null) {
            if (oldCell.getSheet().getWorkbook() == newCell.getSheet().getWorkbook()) {
                newCell.setCellStyle(oldCell.getCellStyle());
            } else {
                int stHashCode = oldCell.getCellStyle().hashCode();
                XSSFCellStyle newCellStyle = styleMap.get(stHashCode);
                if (newCellStyle == null) {
                    newCellStyle = newCell.getSheet().getWorkbook().createCellStyle();
                    newCellStyle.cloneStyleFrom(oldCell.getCellStyle()); // *******************
                    styleMap.put(stHashCode, newCellStyle);
                }
                newCell.setCellStyle(newCellStyle);
            }
        }

        switch(oldCell.getCellType()) {
            case XSSFCell.CELL_TYPE_STRING:
                newCell.setCellValue(oldCell.getStringCellValue());
                break;
          case XSSFCell.CELL_TYPE_NUMERIC:
                newCell.setCellValue(oldCell.getNumericCellValue());
                break;
            case XSSFCell.CELL_TYPE_BLANK:
                newCell.setCellType(XSSFCell.CELL_TYPE_BLANK);
                break;
            case XSSFCell.CELL_TYPE_BOOLEAN:
                newCell.setCellValue(oldCell.getBooleanCellValue());
                break;
            case XSSFCell.CELL_TYPE_ERROR:
                newCell.setCellErrorValue(oldCell.getErrorCellValue());
                break;
            case XSSFCell.CELL_TYPE_FORMULA:
                newCell.setCellFormula(oldCell.getCellFormula());
                break;
            default:
                break;
        }

    }

          StylesTable newStylesSource = newCell.getSheet().getWorkbook().getStylesSource();
          StylesTable oldStylesSource = oldCell.getSheet().getWorkbook().getStylesSource();
          for (XSSFCellFill fill : oldStylesSource.getFills())
          {
            XSSFCellFill fillNew = new XSSFCellFill(fill.getCTFill());
            newStylesSource.putFill(fillNew);
          }
          for (XSSFCellBorder border : oldStylesSource.getBorders())
          {
            XSSFCellBorder borderNew = new XSSFCellBorder(border.getCTBorder());
            newStylesSource.putBorder(borderNew);
          }