SlideShow ppt = new SlideShow(new FileInputStream("presentation.ppt"));
System.out.println("Total Slides Count: " + ppt.getSlides().length);

//Instantiate a PresentationEx object that represents a PPTX file
Presentation pres = new Presentation("data/presentation.pptx");

System.out.println("Total Slides in Count: " + pres.getSlides().size());