HashPrintRequestAttributeSet will not serialize correctly

Question

It seems that HashPrintRequestAttributeSet (or something else) doesn't serialize correctly.
This only works for a certain high end printer with (multi-purpose tray selected). Note that loading from file right after saving works fine (loading from scratch doesn't work).
Output:
Loading print attributes...
Could not load print properties: java.io.InvalidObjectException: Integer value = 12 not in valid range 0..5for class class sun.print.Win32MediaTray
     at javax.print.attribute.EnumSyntax.readResolve(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at java.io.ObjectStreamClass.invokeReadResolve(Unknown Source)
     at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
     at java.io.ObjectInputStream.readObject0(Unknown Source)
     at java.io.ObjectInputStream.readObject(Unknown Source)
     at javax.print.attribute.HashAttributeSet.readObject(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at java.io.ObjectStreamClass.invokeReadObject(Unknown Source)
     at java.io.ObjectInputStream.readSerialData(Unknown Source)
     at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
     at java.io.ObjectInputStream.readObject0(Unknown Source)
     at java.io.ObjectInputStream.readObject(Unknown Source)
     at PrintObject.loadAttributes(PrintObject.java:245)
     at PrintObject.sendPrintJob(PrintObject.java:285)
     at printPngApplet.init(printPngApplet.java:81)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Sending print job...
Saving print attributes...
Done.
Done.
Loading print attributes...
Done.I have the following class:
class PrintObject implements Printable
     private String propertyFile = "printer.properties";
     private HashPrintRequestAttributeSet attributes = new HashPrintRequestAttributeSet();
     private Properties properties = new Properties();
     public int print (Graphics g, PageFormat f, int pageIndex)
     private void saveAttributes()
          System.out.println("Saving print attributes...");
          try
               // open property file for writing
               ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(propertyFile));
               // save printer selection
               properties.setProperty("Printer", job.getPrintService().getName());
               // write properties object
               out.writeObject(properties);
               // write attributes object
               out.writeObject(attributes);
               // close property file
               out.close();
               System.out.println("Done.");
          catch (Exception e)
               System.out.print("Could not save print properties: ");
               e.printStackTrace();
     private void loadAttributes()
          System.out.println("Loading print attributes...");
          try
               // open a property file
               ObjectInputStream in = new ObjectInputStream(new FileInputStream(propertyFile));
               // read in the properties object
               properties = (Properties)in.readObject();
               // restore printer selection
               PrintService[] services = PrinterJob.lookupPrintServices();
               for(int i = 0; i < services.length; i++)
                    if( services.getName().toString().compareTo(properties.getProperty("Printer", "").toString()) == 0)
                         try {
                              job.setPrintService(services[i]);
                         } catch (PrinterException e)
                              // Couldn't select a service, sorry
                         break;
               // restore attributes
               attributes = (HashPrintRequestAttributeSet)in.readObject();
               // close property file
               in.close();
               System.out.println("Done.");
          catch (Exception e)
               System.out.print("Could not load print properties: ");
               e.printStackTrace();
     public void sendPrintJob()
          if(job == null)
               System.out.println("No printers were detected");
          else
               // tell the job to use this object to request print pages
               job.setPrintable(this);
               job.setJobName("Site Panel Print Job");
               loadAttributes(); // this fails
               // display print dialog
               if (job.printDialog(attributes))
                    // user pressed OK
                    System.out.println("Sending print job...");
                    saveAttributes();
                    // try printing
                    try { job.print(attributes); }
                    catch (Exception e) { System.out.println(e); }
                    System.out.println("Done.");
                    loadAttributes(); // this works fine
Thanks for any help.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   

Answer 1

Squeek_14 wrote:
HI,
I am facing the same problem with the serialization of the HashPrintRequestAttributeSet object. Just wondering if there have been any updates or resolutions to this problem?Hi,
Please don't resurrect old threads. I'm locking this one.
Create a new thread with a specific question, and a good description of what you are trying to do.
Kaj