I'm new to Print Services

Question

Hello all,
I'm having trouble getting Java to print something out.
I created this simple program to check the different available DocFlavors supported by my default print service. This program uses JOptionPane to report the name of the default printer and reports each DocFlavor supported.
import javax.print.*;
import javax.print.attribute.*;
import java.io.*;
import javax.swing.JOptionPane;
public class PrinterInspector
     public static void main(String[] args) throws Exception
          PrintService defaultService = PrintServiceLookup.lookupDefaultPrintService();
          DocFlavor[] flavors = defaultService.getSupportedDocFlavors();
          JOptionPane.showMessageDialog(null, defaultService.getName());
          if (flavors.length == 0) JOptionPane.showMessageDialog(null, "No Printer Support");
          for (int k = 0; k < flavors.length; k++){
               JOptionPane.showMessageDialog(null, "Supported flavor is "+flavors[k]);
                System.exit(0);
}This program works fine, and I chose to use the supported DocFlavor.INPUT_STREAM.AUTOSENSE. I then revised the program with the following code snippet.
import javax.print.*;
import javax.print.attribute.*;
import java.io.*;
import javax.swing.JOptionPane;
public class PrinterInspector
     public static void main(String[] args) throws Exception
          String filename = "PrintPS.java";
               PrintRequestAttributeSet pras =
                 new HashPrintRequestAttributeSet();
                 PrintService defaultService = PrintServiceLookup.lookupDefaultPrintService();
                DocFlavor flavor = DocFlavor.INPUT_STREAM.AUTOSENSE;
          DocPrintJob job = defaultService.createPrintJob();
             FileInputStream fis = new FileInputStream(filename);
             DocAttributeSet das = new HashDocAttributeSet();
             Doc doc = new SimpleDoc(fis, flavor, das);
             job.print(doc, pras);
             Thread.sleep(10000);
          System.exit(0);
}This program runs and exits without any reported errors. However, the default printer only starts the warm up process without printing anything out. The printer seems to get the message from the print job, but the printer seems to be waiting for something.
Anyone have any suggestions?

Answer 1

You might want to attach a PrintJobListener to your job. That might give you an idea what is going on ...