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How to create a ProgressMonitor toolbar E-mail
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ProgressBar

This Java Swing tip illustates a method of creating a ProgressMonitor toolbar. This example includes a timer used to induce progress. Th example also shows how to use the UIManager properties associated with progress monitors.

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ProgressMonitorExample extends JFrame 
        implements ActionListener {
    
    static ProgressMonitor pbar;
    static int counter = 0;
    
    public ProgressMonitorExample() {
        super("Progress Monitor Demo");
        setSize(250,100);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        
        pbar = new ProgressMonitor(null, "Monitoring Progress",
                "Initializing . . ."0100);
        
        // Fire a timer every once in a while to update the progress.
        Timer timer = new Timer(500this);
        timer.start();
        setVisible(true);
    }
    
    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.close();
                System.exit(1);
            }
            pbar.setProgress(counter);
            pbar.setNote("Operation is "+counter+"% complete");
            counter += 2;
        }
    }
}


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