java -jar pdfbox-app-2.0.11.jar ExtractImages "E:\Calligraphy\jiu.pdf"

for i in *.jpg
do
magick $i -negate negate_`basename $i .jpg`.jpg
done

    public static void main(String[] args) {if (args.length < 3) {System.out.println("ImagesToPdf <folderpath> <width> <height>");System.out.println("For example: ImagesToPdf \"E:\\Calligraphy\\create_pdf\\jiu_liqi\\jiu01_last\" 800 1200");return;}List<String> alist = listFilesAndFolders(args[0]);if (alist.size() < 2) {System.out.println("Error:File Count in Folder is < 2");return;}float width = Float.parseFloat(args[1]);float height = Float.parseFloat(args[2]);PDDocument document = new PDDocument();try {for(String s:alist) {PDPage page = new PDPage(new PDRectangle(width, height));PDPageContentStream contentStream = new PDPageContentStream(document, page);document.addPage(page); PDImageXObject  img = PDImageXObject.createFromFile(args[0] + "/" + s, document);                contentStream.drawImage(img, 0, 0);contentStream.close();}document.save("out.pdf");document.close();} catch (FileNotFoundException e) {// TODO Auto-generated catch block
            e.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch block
            e.printStackTrace();}}public static List<String> listFilesAndFolders(String directoryName){File directory = new File(directoryName);//get all the files from a directoryArrayList<String> alist = new ArrayList<String>();File[] fList = directory.listFiles();for (File file : fList){alist.add(file.getName());}alist.sort(Comparator.naturalOrder());return alist;}