Imprimer le code QR en Java

J'apprécierais vraiment si vous pouvez m'aider avec ce petit problème que j'ai depuis un moment maintenant.

Le fait est que lorsque j'imprime un pdf contenant un code qr, le code qr n'est pas affiché dans le document imprimé, il montre juste un espace vide. S'il vous plaît, j'espère que vous pourrez m'aider...Voici le code que j'utilise:

package utilities;

import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.print.Book;
import java.awt.print.PageFormat;
import java.awt.print.Paper;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import java.awt.print.PrinterJob;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;

import com.sun.pdfview.PDFFile;
import com.sun.pdfview.PDFPage;
import com.sun.pdfview.PDFRenderer;
import static java.awt.print.Printable.NO_SUCH_PAGE;
import static java.awt.print.Printable.PAGE_EXISTS;

/**
 * Converts the PDF content into printable format
 */
public class PrintPdf2 {

    private PrinterJob pjob = null;

    public static void main(String[] args) throws IOException, PrinterException {       
                String ruta="C:\\examplePDF.pdf";
        System.out.println("Printing: " + ruta);
        // Create a PDFFile from a File reference
        FileInputStream fis = new FileInputStream(ruta);
        PrintPdf2 printPDFFile = new PrintPdf2(fis, "Test Print PDF");
        printPDFFile.print();
    }

    public PrintPdf2(InputStream inputStream, String jobName) throws IOException, PrinterException {
        byte[] pdfContent = new byte[inputStream.available()];
        inputStream.read(pdfContent, 0, inputStream.available());
        initialize(pdfContent, jobName);
    }

    public PrintPdf2(byte[] content, String jobName) throws IOException, PrinterException {
        initialize(content, jobName);
    }

    private void initialize(byte[] pdfContent, String jobName) throws IOException, PrinterException {
        ByteBuffer bb = ByteBuffer.wrap(pdfContent);
        // Create PDF Print Page
        PDFFile pdfFile = new PDFFile(bb);
        PDFPrintPage pages = new PDFPrintPage(pdfFile);

        // Create Print Job
        pjob = PrinterJob.getPrinterJob();
        PageFormat pf = PrinterJob.getPrinterJob().defaultPage();
        pjob.setJobName(jobName);
        Book book = new Book();
        book.append(pages, pf, pdfFile.getNumPages());
        pjob.setPageable(book);

        // to remove margins
        Paper paper = new Paper();
        paper.setImageableArea(0, 0, paper.getWidth(), paper.getHeight());
        pf.setPaper(paper);
    }

    public void print() throws PrinterException {
        // Send print job to default printer
        pjob.print();
    }
}

/**
 * Class that actually converts the PDF file into Printable format
 */
class PDFPrintPage implements Printable {

    private PDFFile file;

    PDFPrintPage(PDFFile file) {
        this.file = file;
    }

    public int print(Graphics g, PageFormat format, int index) throws PrinterException {
        int pagenum = index + 1;
        if ((pagenum >= 1) && (pagenum <= file.getNumPages())) {
            Graphics2D g2 = (Graphics2D) g;
            PDFPage page = file.getPage(pagenum);

            // fit the PDFPage into the printing area
            Rectangle imageArea = new Rectangle((int) format.getImageableX(), (int) format.getImageableY(),
                    (int) format.getImageableWidth(), (int) format.getImageableHeight());
            g2.translate(0, 0);
            PDFRenderer pgs = new PDFRenderer(page, g2, imageArea, null, null);
            try {
                page.waitForFinish();
                pgs.run();
            } catch (InterruptedException ie) {
                // nothing to do
            }
            return PAGE_EXISTS;
        } else {
            return NO_SUCH_PAGE;
        }
    }
}

Merci d'avance :)