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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.

Cancel print job

This is an example that demonstrates how to cancel print jobs in a Java Desktop Application. This is a very basic step you have to consider when you have to develop error handling procedures for your applications.

In short, all you have to do to cancel print jobs is:

  • Open a pdf file you want to print.
  • Create a PDF DocFlavor using DocFlavor.INPUT_STREAM.PDF that will create.
  • Locate the default print service for this environment using PrintServiceLookup.lookupDefaultPrintService()
  • Create and return a DocPrintJob capable of handling data from any of the supported document flavors using service.createPrintJob().
  • Start the print job with printJob.print.
  • Use (CancelablePrintJob) printJob to create a
  • CancelablePrintJob and use cancelableJob.cancel() to cancel the print job.

Let’s see the code snippet that follows:

package com.javacodegeeks.snippets.desktop;

import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

import javax.print.CancelablePrintJob;
import javax.print.Doc;
import javax.print.DocFlavor;
import javax.print.DocPrintJob;
import javax.print.PrintException;
import javax.print.PrintService;
import javax.print.PrintServiceLookup;
import javax.print.SimpleDoc;
import javax.swing.JButton;
import javax.swing.JFrame;

public class CancelPrintJob {

	private static DocPrintJob printJob;

	private static void printDocument() {

		try {

			// Open the image file
			InputStream is = new BufferedInputStream(new FileInputStream("myfile.pdf"));

			// create a PDF doc flavor
			DocFlavor flavor = DocFlavor.INPUT_STREAM.PDF;

			// 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.
			printJob = service.createPrintJob();

			// Construct a SimpleDoc with the specified
			// print data, doc flavor and doc attribute set.
			Doc doc = new SimpleDoc(is, flavor, null);

			// Print a document with the specified job attributes.
			printJob.print(doc, null);

			is.close();

		}
		catch (PrintException e) {
			System.out.println("Failed to cancel printing:" + e.getMessage());
		}
		catch (IOException e) {
			System.out.println("I/O Error:" + e.getMessage());
		}

	}

	private static void cancelPrinting() {
		try {
			CancelablePrintJob cancelableJob = (CancelablePrintJob) printJob;
			// Stops further processing of a print job.
			cancelableJob.cancel();
		}
		catch (PrintException e) {
			System.out.println("Failed to cancel printing:" + e.getMessage());
		}
	}

	private static void createAndShowGUI() {

		// Create and set up the window.
		final JFrame frame = new JFrame("Cancel Print Example");

		// Display the window.
		frame.setSize(300, 200);
		frame.setVisible(true);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		// set flow layout for the frame
		frame.getContentPane().setLayout(new FlowLayout());

		JButton printButton = new JButton("Print");

		printButton.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				printDocument();
			}
		});

		JButton cancelButton = new JButton("Cancel");

		cancelButton.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				cancelPrinting();
			}
		});

		frame.getContentPane().add(printButton);
		frame.getContentPane().add(cancelButton);

	}

	public static void main(String[] args) throws Exception {
		//Schedule a job for the event-dispatching thread:
	    //creating and showing this application's GUI.
	    javax.swing.SwingUtilities.invokeLater(new Runnable() {

  public void run() {

createAndShowGUI(); 

  }
	    });
	}

}

 
This was an example on how to cancel print job.

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