Workbook workbook = new Workbook("Excel.xlsx");
Worksheet sheet = workbook.getWorksheets().get(0);
Shape wordart = sheet.getShapes().addTextEffect(MsoPresetTextEffect.TEXT_EFFECT_1, "CONFIDENTIAL",
"Arial Black", 50, false, true, 18, 8, 1, 1, 130, 800);
FillFormat wordArtFormat = wordart.getFill();
wordArtFormat.setOneColorGradient(Color.getRed(), 0.2, GradientStyleType.HORIZONTAL, 2);
wordArtFormat.setTransparency(0.9);
wordart.setHasLine(false);
wordart.setLocked(true);
wordart.setLockedProperty(ShapeLockType.SELECTION, true);
wordart.setLockedProperty(ShapeLockType.SHAPE_TYPE, true);
wordart.setLockedProperty(ShapeLockType.MOVE, true);
wordart.setLockedProperty(ShapeLockType.RESIZE, true);
wordart.setLockedProperty(ShapeLockType.TEXT, true);
workbook.save("output.xlsx");