Converteer HTML naar XML in Java

Presentation pres = new Presentation();
try {
    pres.getSlides().removeAt(0);
    FileInputStream tr = new FileInputStream("file.html");
    pres.getSlides().addFromHtml(tr);
    for (int index = 0; index < pres.getSlides().size(); index++)
    {
        ISlide slide = pres.getSlides().get_Item(index);

        FileOutputStream fileStream = new FileOutputStream("slide-" + index + ".xml");
        try {
            slide.writeAsSvg(fileStream);
        } finally {
            fileStream.close();
        }
    }
} finally {
    if (pres != null) pres.dispose();
}