I'm scripting an FTP Applet in Java and I want to have a Progressbar but it doesn't work.

My code:

ftpUpload.java
Code:
package mediaplayer;
import java.io.*;
import java.net.*;
import java.awt.*;
import javax.swing.*;

public class ftpUpload {
    protected ftpConnectie cconn;
    public final String localfile;
    public final String targetfile;

    public ftpUpload(String _host, String _user, String _password, String _localfile, String _targetfile) {
        cconn= new ftpConnectie(_host, _user, _password);
        localfile= _localfile;
        targetfile= _targetfile;
        doIt();
    }

    public ftpUpload(String _host, String _user, String _password, String _file) {
        cconn= new ftpConnectie(_host, _user, _password);
        localfile= _file;
        targetfile= _file;
        doIt();
    }

    protected void doIt() {
        try {
            progress p = new progress();
            
            int percVal = 0;
            int i = 0;
            double bytesUploaded = 0;
            int currentFileUpPercent = 0;

            File fileInfo = new File(localfile);
            OutputStream os= cconn.openUploadStream(targetfile);
            FileInputStream is=  new FileInputStream(localfile);
            byte[] buf= new byte[1024];
            int c;
            while ((i = is.read(buf)) >= 0) {
                bytesUploaded += i;
                percVal = (int) ((bytesUploaded / fileInfo.length()) * 100);
                currentFileUpPercent = percVal;
                p.vulProgress(currentFileUpPercent);

                c= is.read(buf);
                if (c<= 0)  break;
                os.write(buf, 0, c);
            }
            os.close();
            is.close();
            cconn.close();
        } catch (Exception E) {
        }
    }
}
progress.java
Code:
package mediaplayer;
import java.awt.*;
import javax.swing.*;

public class progress {
    JFrame test = new JFrame();
    JProgressBar pbProgress = new JProgressBar();
    JLabel lblNaam = new JLabel();

    public progress() {
        test.setLayout(new BorderLayout());
        lblNaam.setText("Progress: ");
        test.getContentPane().add(lblNaam, BorderLayout.NORTH);
        test.getContentPane().add(pbProgress, BorderLayout.SOUTH);
        test.setSize(300,150);
        test.setEnabled(true);
        test.setVisible(true);
    }

    public void vulProgress(int proc){
        pbProgress.setValue(proc);
    }

}
And in my main-project I have the following code under a button.

Code:
    private void btnBestandActionPerformed(java.awt.event.ActionEvent evt) {                                           
        JFileChooser fc = new JFileChooser("C:/");
        MijnFilter filter = new MijnFilter();
        filter.addExtension("mp3");
        filter.addExtension("wav");
        filter.setDescription("Muziekbestanden");
        fc.setFileFilter(filter);
        if(fc.showOpenDialog(this) == JFileChooser.APPROVE_OPTION) {
            File bestand = fc.getSelectedFile();
            ftpUpload fu = new ftpUpload("*ftp-folder*","*username*,"*password*",
                    bestand.getAbsolutePath(),bestand.getName());
            txtBestandUploaden.setText(bestand.getAbsolutePath());
        }
    }

If I run the code I see an empty JFrame if I upload a file and if the file is uploaded I can see all the items in my JFrame and a half filled Progressbar.
The file uploads perfectly.
Can anyone help me with this?