Patrick Corless added a comment - 02/Apr/13 10:14 AM Added a new method to IncrementalUpdater which will write each PDF object's byte's to an byte[]. The method getUpdatedDocumentObjects() can be used to write out the changed PDF objects made by the most recent PDF edits. The following code is n example of how to read the bytes back into the same PDF file. try { // get the updated bites byte[][] updates = IncrementalUpdater.getUpdatedDocumentObjects(document); // write the bytes to file FileOutputStream fileOutputStream = new FileOutputStream("changes.txt"); for (byte[] update : updates) { fileOutputStream.write(update); } fileOutputStream.close(); controller.closeDocument(); // read the changes back into the document. controller.openDocument(filePath); FileInputStream fileInputStream = new FileInputStream("changes.txt"); Library library = document.getCatalog().getLibrary(); Parser parser = new Parser(fileInputStream); // keep a hard reference to the objects ArrayList<Object> libraryObjects = new ArrayList<Object>(); for (Object streamObject = parser.getObject(library); streamObject != null; streamObject = parser.getObject(library)) { libraryObjects.add(streamObject); } // iterate over the stream objects look for pages so we know which // annotations should be added to which page. pageComponents = controller.getDocumentViewController() .getDocumentViewModel().getPageComponents(); myAnnotationCallback = new org.icepdf.ri.common.MyAnnotationCallback( controller.getDocumentViewController()); for (Object objects : libraryObjects){ if (objects instanceof PObject && ((PObject)objects).getObject() instanceof Page){ Page page = (Page)((PObject)objects).getObject() ; page.init(); int pageNumber = document.getPageTree().getPageNumber(page.getPObjectReference()); AbstractPageViewComponent pageViewComponent = pageComponents.get(pageNumber); // add our new page to the library List<Annotation> annotations = page.getAnnotations(); // hook up the new annotations for (Annotation annotation : annotations) { AnnotationComponent annotationComponent = AnnotationComponentFactory.buildAnnotationComponent( annotation, controller.getDocumentViewController(), pageViewComponent, controller.getDocumentViewController().getDocumentViewModel()); myAnnotationCallback.newAnnotation(pageViewComponent, annotationComponent); } pageViewComponent.init(); } } } catch (IOException e) { e.printStackTrace(); } catch (PDFException e) { e.printStackTrace(); }