Java Print Server API

Question

Hello, i have a simple example but when i execute it, nothing prints. Can anyone explain to me why;
import java.io.*;
import javax.print.*;
import javax.print.attribute.*;
import javax.print.attribute.standard.*;
DocFlavor flavor = DocFlavor.INPUT_STREAM.TEXT_PLAIN_HOST;
PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();
aset.add(MediaSizeName.ISO_A4);
aset.add(new Copies(1));
PrintService[] pservices = PrintServiceLookup.lookupPrintServices(flavor, aset);
// the pservices.length is 0. why?
// the printers that i have are:
// EPSON STYLUS COLOR 900
// HP LASERJET 6P
// OFFICEJET 6100 SERIES
if (pservices.length > 0) {
System.out.println("selected printer " + pservices[3].getName());
DocPrintJob pj = pservices[0].createPrintJob();
try {
// test.txt is a simple text/plain file
FileInputStream fis = new FileInputStrea("c://tmp//test.txt");
Doc doc = new SimpleDoc(fis, flavor, null);
pj.print(doc, aset);
catch (IOException ie) {
System.err.println(ie);
catch (PrintException e) {
System.err.println(e);
Is it possible none of these printers to support this 'flavor'?
Did i do anything wrong?
Thanks, in advance

Answer 1

Hello, i have a simple example but when i execute it, <p>
nothing prints. Can anyone explain to me why;<p>
import java.io.*;<p>
import javax.print.*;<p>
import javax.print.attribute.*;<p>
import javax.print.attribute.standard.*;<p>
...........<p>
DocFlavor flavor =<p>
DocFlavor.INPUT_STREAM.TEXT_PLAIN_HOST;<p>
PrintRequestAttributeSet aset = new<p>
new HashPrintRequestAttributeSet();<p>
aset.add(MediaSizeName.ISO_A4);<p>
aset.add(new Copies(1));<p>
PrintService[] pservices =<p>
es = PrintServiceLookup.lookupPrintServices(flavor,<p>
aset);<p>
// the pservices.length is 0. why?<p>
// the printers that i have are:<p>
// EPSON STYLUS COLOR 900<p>
// HP LASERJET 6P<p>
// OFFICEJET 6100 SERIES<p>
if (pservices.length > 0) {<p>
System.out.println("selected printer " +<p>
er " + pservices[3].getName());<p>
DocPrintJob pj =<p>
b pj = pservices[0].createPrintJob();<p>
try {<p>
// test.txt is a simple text/plain file <p>
FileInputStream fis = new<p>
is = new FileInputStrea("c://tmp//test.txt");<p>
Doc doc = new SimpleDoc(fis, flavor, null);<p>
pj.print(doc, aset);<p>
}<p>
catch (IOException ie) {<p>
System.err.println(ie);<p>
}<p>
catch (PrintException e) {<p>
System.err.println(e);<p>
}<p>
<p>
Is it possible none of these printers to support this<p>
'flavor'?<p>
Did i do anything wrong?<p>
Thanks, in advance<p>