// Create a new workbook Workbook workbook = new Workbook(); IWorksheet worksheet = workbook.getWorksheets().get(0); worksheet.getRange("A1").setValue("Bold"); worksheet.getRange("A1").getFont().setBold(true); worksheet.getRange("A2").setValue("Italic"); worksheet.getRange("A2").getFont().setItalic(true); worksheet.getRange("A3").setValue("Bold Italic"); worksheet.getRange("A3").getFont().setBold(true); worksheet.getRange("A3").getFont().setItalic(true); // Save to an excel file workbook.save("FontStyle.xlsx");