In this example we are going to see how to handle print job attributes changes in a Java Desktop Applications. This will give you more control when handling print jobs inside your application.
To handle print service attribute changes one should take these steps:
- Use
PrintServiceLookup.lookupDefaultPrintService()to locate the default print service for this environment. - Create a class that implements
PrintJobAttributeListener. - Override
attributeUpdatemethod to customize the handlig of that specific event. Now every time a print attribute changes, this method will fire up. - Use
PrintServiceAttributeEvent.getAttributesto get the print attibutes and the updated values.
Let’s see the code:
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | package com.javacodegeeks.snippets.desktop;import javax.print.DocPrintJob;import javax.print.PrintService;import javax.print.PrintServiceLookup;import javax.print.attribute.Attribute;import javax.print.attribute.HashPrintJobAttributeSet;import javax.print.attribute.PrintJobAttributeSet;import javax.print.event.PrintJobAttributeEvent;import javax.print.event.PrintJobAttributeListener;public class HandlePrintJobAttributeChanges { public static void main(String[] args) throws Exception { // Locate the default print service for this environment. PrintService service = PrintServiceLookup.lookupDefaultPrintService(); // Create and return a PrintJob capable of handling data from // any of the supported document flavors. DocPrintJob printJob = service.createPrintJob(); PrintJobAttributeSet attributes = new HashPrintJobAttributeSet(printJob.getAttributes()); printJob.addPrintJobAttributeListener(new CustomPrintJobAttributeListener(), attributes); } private static class CustomPrintJobAttributeListener implements PrintJobAttributeListener { public void attributeUpdate(PrintJobAttributeEvent pjae) { Attribute[] attrs = pjae.getAttributes().toArray(); for (int i=0; i<attrs.length; i++) {String attrName = attrs[i].getName();String attrValue = attrs[i].toString();System.out.println("Attribute updated : " + attrName + " with value: " + attrValue); } } }} |
This was an example on how to handle print job attribute changes.
