OPCPackage pptPackage = OPCPackage.open(fis); XMLSlideShow xmlSlideShow = new XMLSlideShow(pptPackage); XSLFSlide slides[] = xmlSlideShow.getSlides(); for (XSLFSlide slide : slides) { CTSlide rowSlide = slide.getXmlObject(); CTGroupShape gs = rowSlide.getCSld().getSpTree(); List<CTShape> shapes = gs.getSpList(); for (CTShape shape : shapes) { CTTextBody tp = shape.getTxBody(); if (null == tp) { continue; } List<CTTextParagraph> paras = tp.getPList(); for (CTTextParagraph para : paras) { //CTRegularTextRun[] textRuns = para.getRArray(); List<CTRegularTextRun> textRuns =para.getRList(); for (CTRegularTextRun textRun : textRuns) { content.append(textRun.getT()); } } } } /////// When the code run to the line: List<CTRegularTextRun> textRuns =para.getRList(); There throw an exception: Caused by: java.lang.ClassNotFoundException: org.openxmlformats.schemas.drawingml.x2006.main.impl.CTTextParagraphImpl$1RList at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:248) ... 2 more
Please see the FAQ for why this is happening, what a short term workaround is, and what the long term fix is. http://poi.apache.org/faq.html#faq-N10025
*** This bug has been marked as a duplicate of bug 53925 ***