// Create a new workbook Workbook workbook = new Workbook(); IWorksheet worksheet = workbook.getWorksheets().get(0); IRange rangeB2 = worksheet.getRange("B2"); rangeB2.setValue("Rotated Cell Contents"); rangeB2.setHorizontalAlignment(HorizontalAlignment.Center); rangeB2.setVerticalAlignment(VerticalAlignment.Center); // Rotate cell contents. rangeB2.setOrientation(15); // Save to an excel file workbook.save("RotateCellContents.xlsx");