// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-Java
// Create workbook from sample file
Workbook workbook = new Workbook();

// Access first worksheet from the collection
Worksheet sheet = workbook.getWorksheets().get(0);

// Add the line to the worksheet
sheet.getShapes().addShape(MsoDrawingType.LINE, 2, 0, 2, 0, 100, 300);//method 1
//sheet.getShapes().addAutoShape(AutoShapeType.LINE, 2, 0, 2, 0, 100, 300);//method 2

//Save.You can check your icon in this way.
workbook.save("sample2.xlsx", SaveFormat.XLSX);