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POJava Printer Service throws ClassCastException while using PrinterURI Attribute
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  1. POJava Printer Service throws ClassCastException while using PrinterURI Attribute
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    copied!<p>I have implemented a program, to print the document to the specific printer using IP address, printer name</p> <p>Code: </p> <pre><code>URI myURI=null; FileInputStream psStream=null; try { psStream = new FileInputStream( "sample.docx" ); } catch ( FileNotFoundException e ) { e.printStackTrace(); } DocFlavor psInFormat = DocFlavor.INPUT_STREAM.GIF; Doc myDoc = new SimpleDoc( psStream, psInFormat, null ); PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet(); aset.add( new Copies(5) ); try { String host="192.255.301.147"; String printer="HP LaserJet 5000 Series PCL6"; String theUrl = "ipp://"+host+"/printers/"+printer; theUrl = URLEncoder.encode(theUrl, "UTF-8"); myURI = new URI(theUrl); aset.add(new PrinterURI(myURI)); } catch (URISyntaxException e) { System.out.println("URI exception caught: "+e); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } PrintService[] services = PrintServiceLookup.lookupPrintServices( psInFormat, aset ); if ( services.length &gt; 0 ) { DocPrintJob job = services[0].createPrintJob(); try { job.print( myDoc, aset ); } catch ( PrintException e ){ } } </code></pre> <p>While running the program, got <strong>ClasscastException</strong>.</p> <pre><code>Exception in thread "Main Thread" java.lang.ClassCastException at javax.print.attribute.AttributeSetUtilities.verifyAttributeValue(AttributeSetUtilities.java:534) at javax.print.attribute.HashAttributeSet.add(HashAttributeSet.java:283) at com.src.print.TestPrint2.main(TestPrint2.java:64) </code></pre> <p>With out adding PrinterURI Attribute in the RequestAttributeSet (<strong><em>aset.add(new PrinterURI(myURI))</em></strong>), the Program is working fine. Its taking default printer configuration and printing the document.</p> <p>Could you please help me out on this. how to use PrinterURI API?</p>
 

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