How to add a note to a slide

I’ve tried following to add a note to first slide, but it did not work.
Could someone please provide sample code to add note in java?

Thanks,
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final ISlideCollection slds = presentation.getSlides();
final INotesSlide NotesSlide = slds.get_Item(0).addNotesSlide();
NotesSlide.getShapes().get_Item(0).setAlternativeText(“Test!”);

Hi Yong,

Please see the following sample code to add notes in a slide using Aspose.Slides for Java.

Presentation pres = new Presentation(“D:\Data\Files\Files\input.pptx”);

final ISlideCollection slds = pres.getSlides();

final INotesSlide NotesSlide = slds.get_Item(0).addNotesSlide();

NotesSlide.getNotesTextFrame().setText(“Hello”);

pres.save(“d:\data\notes.pptx”,SaveFormat.Pptx);

Please feel free to contact support in case you need any further assistance.

Thanks & Regards,

Many thanks, it works.