A demonstration of the ProgressMonitor toolbar : ProgressBar « Swing JFC « Java

A demonstration of the ProgressMonitor toolbar

A demonstration of the ProgressMonitor toolbar
Java Swing, 2nd Edition
By Marc Loy, Robert Eckstein, Dave Wood, James Elliott, Brian Cole
ISBN: 0-596-00408-7
Publisher: O'Reilly 

// ProgressMonitorExample.java
// A demonstration of the ProgressMonitor toolbar. A timer is used to induce
// progress. This example also shows how to use the UIManager properties
// associated with progress monitors.

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JFrame;
import javax.swing.ProgressMonitor;
import javax.swing.SwingUtilities;
import javax.swing.Timer;
import javax.swing.UIManager;

public class ProgressMonitorExample extends JFrame implements ActionListener {

  static ProgressMonitor pbar;

  static int counter = 0;

  public ProgressMonitorExample() {
    super("Progress Monitor Demo");
    setSize(250, 100);

    pbar = new ProgressMonitor(null, "Monitoring Progress",
        "Initializing . . .", 0, 100);

    // Fire a timer every once in a while to update the progress.
    Timer timer = new Timer(500, this);

  public static void main(String args[]) {
    UIManager.put("ProgressMonitor.progressText", "This is progress?");
    UIManager.put("OptionPane.cancelButtonText", "Go Away");
    new ProgressMonitorExample();

  public void actionPerformed(ActionEvent e) {
    // Invoked by the timer every half second. Simply place
    // the progress monitor update on the event queue.
    SwingUtilities.invokeLater(new Update());

  class Update implements Runnable {
    public void run() {
      if (pbar.isCanceled()) {
      pbar.setNote("Operation is " + counter + "% complete");
      counter += 2;

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