public class ApacheAddLayoutSlides
{
public static void main(String[] args) throws Exception
{
XMLSlideShow ppt = new XMLSlideShow(new FileInputStream("data/presentation.pptx"));
// blank slide
ppt.createSlide();
// there can be multiple masters each referencing a number of layouts
// for demonstration purposes we use the first (default) slide master
XSLFSlideMaster defaultMaster = ppt.getSlideMasters()[0];
// title slide
XSLFSlideLayout titleLayout = defaultMaster.getLayout(SlideLayout.TITLE);
// fill the placeholders
XSLFSlide slide1 = ppt.createSlide(titleLayout);
// title and content
XSLFSlideLayout titleBodyLayout = defaultMaster.getLayout(SlideLayout.TITLE_AND_CONTENT);
XSLFSlide slide2 = ppt.createSlide(titleBodyLayout);
FileOutputStream out = new FileOutputStream("data/Apache_Layouts.pptx");
ppt.write(out);
out.close();
System.out.println("Layout slides created Successfuly.");
}