// Create a new workbook Workbook workbook = new Workbook(); IWorksheet worksheet = workbook.getWorksheets().get(0); ButtonCellType cellType = new ButtonCellType(); cellType.setText("Hello"); cellType.setButtonBackColor("Azure"); cellType.setMarginLeft(10); cellType.setMarginRight(10); worksheet.getRange("C5").setCellType(cellType); // Save to a pdf file workbook.save("AddButtonCellType.pdf");