Analisar arquivos PPT em Java

Presentation presentation = new Presentation("demo.ppt");
try {
    ISlide slide = presentation.getSlides().get_Item(0);
    ITextFrame[] slideTextFrames = SlideUtil.getAllTextBoxes(slide);

    for (ITextFrame textFrame : slideTextFrames) {
        for (IParagraph paragraph : textFrame.getParagraphs()) {
            for (IPortion portion : paragraph.getPortions()) {
                System.out.print(portion.getText());
                System.out.print(portion.getPortionFormat().getFontHeight());
                System.out.print(portion.getPortionFormat().getLatinFont().getFontName());
            }
        }
    }
} finally {
    presentation.dispose();
}