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How to implement ProgressMonitor toolbar with a file to monitor E-mail
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This Java tip illustrates a method of implementing a ProgressMonitor toolbar with an input file to monitor. This example is similar to the tip for ProgressMonitorExample except that we can now use an actual input file to monitor rather than inducing progress manually. The file to load should be passed as a command line argument.

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

public class ProgressMonitorInputExample {
    
    public ProgressMonitorInputExample(String filename) {
        ProgressMonitorInputStream monitor;
        try {
            monitor = new ProgressMonitorInputStream(
                    null, "Loading "+filename, 
                    new FileInputStream(filename));
            
            while (monitor.available() 0) {
                byte[] data = new byte[38];
                monitor.read(data);
                System.out.write(data);
            }
        catch (FileNotFoundException e) {
            JOptionPane.showMessageDialog(null, 
                    "Unable to find file: "
                    + filename, "Error", JOptionPane.ERROR_MESSAGE);
            
        catch (IOException e) {;}
    }
    
    public static void main(String args[]) {
        new ProgressMonitorInputExample(args[0]);
    }
}


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