Help with Java Printing-Custom paper sizes

Question

Hi,
I'm trying to print documents with custom paper sizes out of java.
I can print fine when I don't try to set the MediaSize to a custom size or when I use already named constants like: "MediaSizeName.JIS_B4"
The error message I get is this:
java.lang.ClassCastException
     at javax.print.attribute.AttributeSetUtilities.verifyAttributeValue(Unknown Source)
     at javax.print.attribute.HashAttributeSet.add(Unknown Source)
     at hello.Printy.printDocument(Printy.java:103)
     at hello.Printy.main(Printy.java:135)
The offending line(103) looks like this:
pras.add(new MediaSize(1,10,MediaSize.INCH ));The function that its from looks like this:
public  void printDocument()
try
          System.out.println("input file name is");
     System.out.println(inputFileName);
PrintRequestAttributeSet pras = new HashPrintRequestAttributeSet();
DocFlavor flavor = DocFlavor.INPUT_STREAM.AUTOSENSE;
PrintService printService[] = PrintServiceLookup.lookupPrintServices(flavor, pras);
PrintService defaultService = PrintServiceLookup.lookupDefaultPrintService();
PrintService printPrintService = null;
// didn't work pras.add(new MediaSize(1,10,MediaSize.INCH) );
PrintService service = ServiceUI.printDialog(null, 200, 200,printService, defaultService, flavor, pras);
if (service != null)
     System.out.println("There is a service aunty-may!!");
DocPrintJob job = service.createPrintJob();
FileInputStream fis = new FileInputStream(getInputFileName());
DocAttributeSet das = new HashDocAttributeSet();
//pras.add(new MediaSize((float)3.25, (float)4.75, Size2DSyntax.INCH ) );
// - works
//pras.add(MediaSizeName.JIS_B4);
pras.add(new MediaSize(1,10,MediaSize.INCH ));
//pras.add(new MediaSize(1,10,MediaSize.INCH) );
     System.out.println("Doc has been set to custom size");
Doc doc = new SimpleDoc(fis, flavor, null);
job.print(doc, pras);
     System.out.println("any doc for you?");
catch (Exception e)
e.printStackTrace();
}Any help with this would be greatly appreciated. I'm new to java but I've programmed a bunch in c++.

Answer 1

Hmm ... no real help, but I found this note in the API:
MediaSize is not yet used to specify media. Its current role is as a mapping for named
media (see MediaSizeName). Clients can use the mapping method
MediaSize.getMediaSizeForName(MediaSizeName) to find the physical dimensions of
the MediaSizeName instances enumerated in this API. This is useful for clients which
need this information to format & paginate printing.