java print service

[yytan]

dear all;

i am getting this code from sun website but it seem like doesnt print anything out? when i compile, it gives no error, may i know why?


import java.io.*;
import javax.print.*;
import javax.print.attribute.*;
import javax.print.attribute.standard.*;
import javax.print.event.*;

public class PrintPS {

public static void main(String args[]) {
PrintPS ps = new PrintPS();
}
public PrintPS() {
/* Construct the print request specification.
* The print data is Postscript which will be
* supplied as a stream. The media size
* required is A4, and 2 copies are to be printed
*/
//DocFlavor flavor = DocFlavor.INPUT_STREAM.POSTSCRIPT;
DocFlavor flavor = DocFlavor.INPUT_STREAM.TEXT_PLAIN_US_ASCII;
//DocFlavor flavor = DocFlavor.INPUT_STREAM.TEXT_PLAIN_HOST;
PrintRequestAttributeSet aset =
new HashPrintRequestAttributeSet();
aset.add(MediaSizeName.ISO_A4);
aset.add(new Copies(1));
//aset.add(Sides.TWO_SIDED_LONG_EDGE);
aset.add(Finishings.STAPLE);

/* locate a print service that can handle it */
PrintService[] pservices =
PrintServiceLookup.lookupPrintServices(flavor, aset);
System.out.println("pservices len = " + pservices.length);
if (pservices.length > 0) {
System.out.println("selected printer " + pservices[0].getName());

/* create a print job for the chosen service */
DocPrintJob pj = pservices[0].createPrintJob();
try {
/*
* Create a Doc object to hold the print data.
* Since the data is postscript located in a disk file,
* an input stream needs to be obtained
* BasicDoc is a useful implementation that will if requested
* close the stream when printing is completed.
*/
FileInputStream fis = new FileInputStream("CAM10310.txt"
Doc doc = new SimpleDoc(fis, flavor, null);

/* print the doc as specified */
pj.print(doc, aset);

/*
* Do not explicitly call System.exit() when print returns.
* Printing can be asynchronous so may be executing in a
* separate thread.
* If you want to explicitly exit the VM, use a print job
* listener to be notified when it is safe to do so.
*/

} catch (IOException ie) {
System.err.println(ie);
} catch (PrintException e) {
System.err.println(e);
}
}
}
}

 

[thekobbler]

Seems to be a common problem, there's a lot of debate on Sun's Forum pages, but no answers!

I think its down to what flavors your printer supports. try using


DocFlavor[] flavors = pservices[0].getSupportedDocFlavors();
for(int i=0;i<flavors.length;i++){
System.out.println(&quot;-------------------------------------------------------------&quot;
System.out.println(&quot;MediaSubtype = &quot; +flavors.getMediaSubtype());
System.out.println(&quot;MediaType = &quot; +flavors.getMediaType());
System.out.println(&quot;MimeType = &quot; +flavors.getMimeType());
System.out.println(&quot;RepresentationClassName = &quot; +flavors.getRepresentationClassName());
System.out.println(&quot;hostEncoding = &quot; +flavors.hostEncoding);
System.out.println(&quot;toString = &quot; +flavors.toString());
}


to list the flavors, I note on mine (Samsung ML1200) it doesn't list a text/plain. ;-(

good luck, I'm curious what the answer is myself.

 

[thekobbler]

OOps forgot, can't use [ i ] unless surround text with [ code ] [/ code ] as this converts text to italics... Try again..


Seems to be a common problem, there's a lot of debate on Sun's Forum pages, but no answers!

I think its down to what flavors your printer supports. try using

      DocFlavor[i] flavors = pservices[0].getSupportedDocFlavors();
      for(int i=0;n<flavors.length;i++){
        System.out.println(&quot;-------------------------------------------------------------&quot;);
        System.out.println(&quot;MediaSubtype            = &quot; +flavors[i].getMediaSubtype());
        System.out.println(&quot;MediaType               = &quot; +flavors[i].getMediaType());
        System.out.println(&quot;MimeType                = &quot; +flavors[i].getMimeType());
        System.out.println(&quot;RepresentationClassName = &quot; +flavors[i].getRepresentationClassName());
        System.out.println(&quot;hostEncoding            = &quot; +flavors[i].hostEncoding);
        System.out.println(&quot;toString                = &quot; +flavors[i].toString());
      }

to list the flavors, I note on mine (Samsung ML1200) it doesn't list a text/plain. ;-(

good luck, I'm curious what the answer is myself.

 

[yytan]

hi thekobbler;

thanks for ur suggestion, i will go around and try it out. what make me more harder is i am gonna to print in a dot matrix printer using fan-fold paper.... dont know how ...