java print pdf with printdialog

Question

如何打印显示printDialog的PDF？

现在我对这段代码很感兴趣：

public static void print2(){
     InputStream is = null;    
      try
      { 
         PrintService defaultPrintService = PrintServiceLookup.lookupDefaultPrintService();
         DocPrintJob printerJob = defaultPrintService.createPrintJob();

         File pdfFile = new File(TEMPPDF);
         is = new BufferedInputStream(new FileInputStream(pdfFile));
         Doc simpleDoc =  new SimpleDoc(is, DocFlavor.INPUT_STREAM.AUTOSENSE, null);
         printerJob.print(simpleDoc, null);


      }
      catch (Exception e) 
      {
         e.printStackTrace(System.out);
      }
}

但是我会显示打印对话框：

public static void print2(){
     InputStream is = null;    
      try
      { 

         PrinterJob pj = PrinterJob.getPrinterJob(); 
         //pj set pdf file to print ...?         
         pj.printDialog();

      }
      catch (Exception e) 
      {
         e.printStackTrace(System.out);
      }
}