Analizar formatos PPTX en Java

//Load PPTX file
Presentation pptxPresentation = new Presentation("demo.pptx");
try{
    //Get an Array of TextFrameEx objects from the first slide
    ITextFrame[] textFramesSlideOne = SlideUtil.getAllTextBoxes(pptxPresentation.getSlides().get_Item(0));

    //Loop through the Array of TextFrames
    for (int i = 0; i < textFramesSlideOne.length; i++){
        //Loop through paragraphs in current TextFrame
        for (IParagraph para : textFramesSlideOne[0].getParagraphs()){
            //Loop through portions in the current Paragraph
            for (IPortion port : para.getPortions()){
                //Display text in the current portion
                System.out.print(port.getText());

                //Display font height of the text
                System.out.print(port.getPortionFormat().getFontHeight());

                //Display font name of the text
                System.out.print(port.getPortionFormat().getLatinFont().getFontName());
            }
        }
    }
} finally {
    if (pptxPresentation != null) pptxPresentation.dispose();
}
//Similarly extarcting text from the Whole Presentation
//Use getAllTextFrames(pptxPresentation, true) method and Iterate through Array