// Create a new workbook Workbook workbook = new Workbook(); IWorksheet worksheet = workbook.getWorksheets().get(0); IRange a2 = worksheet.getRange("A2"); a2.getFont().setSize(18); a2.getFont().setBold(true); a2.setVerticalAlignment(VerticalAlignment.Center); a2.getEntireRow().setRowHeight(42); a2.getEntireColumn().setColumnWidth(40); a2.setValue("Perfect square trinomial"); ITextRun run = a2.characters(8, 7); run.getFont().setItalic(true); run.getFont().setThemeColor(ThemeColor.Accent1); IRange b2 = worksheet.getRange("B2"); b2.getFont().setSize(26); b2.getEntireColumn().setColumnWidth(60); b2.setValue("(a+b)2 = a2+2ab+b2"); ITextRun superRun1 = b2.characters(5, 1); superRun1.getFont().setSuperscript(true); superRun1.getFont().setColor(Color.GetRed()); ITextRun superRun2 = b2.characters(10, 1); superRun2.getFont().setSuperscript(true); superRun2.getFont().setColor(Color.GetGreen()); ITextRun superRun3 = b2.characters(17, 1); superRun3.getFont().setSuperscript(true); superRun3.getFont().setColor(Color.GetBlue()); // Save to an excel file workbook.save("ConfigRunFont.xlsx");