Comment / CommentAuthor — Aspose.Slides FOSS for Java API Reference

import org.aspose.slides.foss.*;

public class Comment implements IComment

public class CommentAuthor implements ICommentAuthor

import org.aspose.slides.foss.*;
import java.time.LocalDateTime;

Presentation prs = new Presentation();
ICommentAuthorCollection authors = prs.getCommentAuthors();
ICommentAuthor author = authors.addAuthor("John", "J");

ISlide slide = prs.getSlides().get(0);
slide.getSlideComments(null); // read existing comments

// Add comment via the author's comment collection
author.getComments().addComment(
    "Review this slide", slide, new PointF(100, 100), LocalDateTime.now());

prs.save("commented.pptx", SaveFormat.PPTX);