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About Ilias Tsagklis

Ilias Tsagklis
Ilias is a software developer turned online entrepreneur. He is co-founder and Executive Editor at Java Code Geeks.

Handle print job attribute changes

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 attributeUpdate method to customize the handlig of that specific event. Now every time a print attribute changes, this method will fire up.
  • Use PrintServiceAttributeEvent.getAttributes to get the print attibutes and the updated values.

Let’s see the code:

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.

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