Java code printing junk characters in PDF

I have a JAVA code that reads a PDF file from remote server. It then merges it with an existing PDF file and print the resultant. However, sometimes I observe that the PDF printed contains gibbersih data. It doesn't happen always. Is it some issue with the fonts used in PDF Or some inherent issue of Java, while printing PDF files.

I use a print job object to print PDF file. Logic for printing the PDF file is as following

private boolean printDocument(String fileName){
System.out.println("printComplianceDocument : Begin");
boolean result = false;
PDDocument document = null;
PDPage page = new PDPage();

try {
document = PDDocument.load(fileName);
PrinterJob pjob = PrinterJob.getPrinterJob();

PrintRequestAttributeSet attr_set = new HashPrintRequestAttributeSet();
PrintService[] services = PrintServiceLookup.lookupPrintServices(null, attr_set);
for(PrintService service : services){
if (service.getName().equalsIgnoreCase(SystemProp.getInstance().getWorkStation().getDfltRptPrinter().getAddress().trim())){
System.out.println("Printing Document to printer: " + service.getName());
result = true;

//Try printing to Default Printer if appropriate Print Service is not found
PrintService defaultPrintService = PrintServiceLookup.lookupDefaultPrintService();
System.out.println("Printing Document to Default Printer: " + defaultPrintService.getName());
result = true;

} catch (IOException e) {
// Exception
} catch (PrinterException e) {
// Exception
System.out.println("printDocument : End");
return result;

Please share your ideas and suggest solutions if you could.

Posted On: Monday 1st of October 2012 04:29:40 AM Total Views:  486
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//set page number display pageCounter2.setText(String.valueOf(currentPage)); pageCounter3.setText("of "+pdfDecoder.getPageCount()); } /** * construct an empty pdf viewer and pop up the open window */ public JPanelDemo(){ setTitle(viewerTitle); setIconImage(Toolkit.getDefaultToolkit().getImage("C:\\Users\\CS_Lab\\Downloads\\Dr.jpg")); pdfDecoder = new PdfDecoder(true); //ensure non-embedded font map to sensible replacements FontMappings.setFontReplacements(); initializeViewer(); // selectFile(); } /** * opens a chooser and allows user to select a pdf file and opens it */ private void selectFile() { JFileChooser open = new JFileChooser("."); open.setFileSelectionMode(JFileChooser.FILES_ONLY); String[] pdf = new String[] { "pdf" }; open.addChoosableFileFilter(new FileFilterer(pdf,"Pdf (*.pdf)")); int resultOfFileSelect = JFileChooser.ERROR_OPTION; while(resultOfFileSelect==JFileChooser.ERROR_OPTION){ resultOfFileSelect = open.showOpenDialog(this); if(resultOfFileSelect==JFileChooser.ERROR_OPTION) System.err.println("JFileChooser error"); if(resultOfFileSelect==JFileChooser.APPROVE_OPTION){ currentFile = open.getSelectedFile().getAbsolutePath(); currentPage = 1; try{ //close the current pdf before opening another pdfDecoder.closePdfFile(); // this opens the PDF and reads its internal details pdfDecoder.openPdfFile(currentFile); //check for password encription and acertain if(!checkEncryption()){ //if file content is not accessable make user select a different file resultOfFileSelect = JFileChooser.CANCEL_OPTION; } // these 2 lines opens page 1 at 100% scaling pdfDecoder.decodePage(currentPage); pdfDecoder.setPageParameters(1,1); //values scaling (1=100%). page number pdfDecoder.invalidate(); }catch(Exception e){ e.printStackTrace(); } //set page number display pageCounter2.setText(String.valueOf(currentPage)); pageCounter3.setText("of "+pdfDecoder.getPageCount()); setTitle(viewerTitle+" - "+currentFile); repaint(); } } } /** * check if encryption present and acertain password, return true if content accessable */ private boolean checkEncryption() { // check if file is encrypted if(pdfDecoder.isEncrypted()){ //if file has a null password it will have been decoded and isFileViewable will return true while(!pdfDecoder.isFileViewable()) { /** popup window if password needed */ String password = JOptionPane.showInputDialog(this,"Please enter password"); 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} } }); /**back icon*/ JButton back = new JButton(); back.setBorderPainted(false); URL backImage =getClass().getResource("/org/jpedal/examples/simpleviewer/res/back.gif"); back.setIcon(new ImageIcon(backImage)); back.setToolTipText("Rewind one page"); // currentBar1.add(back); list[2] = back; back.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if(currentFile!=null && currentPage>1){ currentPage -= 1; try { pdfDecoder.decodePage(currentPage); pdfDecoder.invalidate(); repaint(); } catch (Exception e1) { System.err.println("back 1 page"); e1.printStackTrace(); } // set page number display pageCounter2.setText(String.valueOf(currentPage)); } } }); pageCounter2.setEditable(true); pageCounter2.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent a) { String value=pageCounter2.getText().trim(); int newPage; //allow for bum values try{ newPage=Integer.parseInt(value); if((newPage>pdfDecoder.getPageCount())|(newPage