How to get a progress bar for a file upload with Apache HttpClient 4

public static void main(String[] args) throws Exception
  {
    String fileName = "test.avi";
    File file = new File(fileName);

    String serverResponse = null;
    HttpParams params = new BasicHttpParams();
    params.setParameter(HttpProtocolParams.USE_EXPECT_CONTINUE, true);
    HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
    HttpClient client = new DefaultHttpClient(params);
    HttpPut put = new HttpPut("http://localhost:8080/" + fileName);

    FileEntity fileEntity = new FileEntity(file, "binary/octet-stream");
    put.setEntity(fileEntity);

    HttpResponse response = client.execute(put);
    HttpEntity entity = response.getEntity();
    if (entity != null)
    {
      serverResponse = EntityUtils.toString(entity);
      System.out.println(serverResponse);
    }
  }

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpVersion;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.util.EntityUtils;

public class ApplicationView implements ActionListener
{

  File file = new File("C:/Temp/my-upload.avi");
  JProgressBar progressBar = null;

  public ApplicationView()
  {
    super();
  }

  public void createView()
  {
    JFrame frame = new JFrame("File Upload with progress bar - Example");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setBounds(0, 0, 300, 200);
    frame.setVisible(true);

    progressBar = new JProgressBar(0, 100);
    progressBar.setBounds(20, 20, 200, 30);
    progressBar.setStringPainted(true);
    progressBar.setVisible(true);

    JButton button = new JButton("upload");
    button.setBounds(progressBar.getX(),
            progressBar.getY() + progressBar.getHeight() + 20,
            100,
            40);
    button.addActionListener(this);

    JPanel panel = (JPanel) frame.getContentPane();
    panel.setLayout(null);
    panel.add(progressBar);
    panel.add(button);
    panel.setVisible(true);
  }

  public void actionPerformed(ActionEvent e)
  {
    try
    {
      sendFile(this.file, this.progressBar);
    }
    catch (Exception ex)
    {
      System.out.println(ex.getLocalizedMessage());
    }
  }

  private void sendFile(File file, JProgressBar progressBar) throws Exception
  {
    String serverResponse = null;
    HttpParams params = new BasicHttpParams();
    params.setParameter(HttpProtocolParams.USE_EXPECT_CONTINUE, true);
    HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
    HttpClient client = new DefaultHttpClient(params);
    HttpPut put = new HttpPut("http://localhost:8080/" + file.getName());

    ProgressBarListener listener = new ProgressBarListener(progressBar);
    FileEntityWithProgressBar fileEntity = new FileEntityWithProgressBar(file, "binary/octet-stream", listener);
    put.setEntity(fileEntity);

    HttpResponse response = client.execute(put);
    HttpEntity entity = response.getEntity();
    if (entity != null)
    {
      serverResponse = EntityUtils.toString(entity);
      System.out.println(serverResponse);
    }
  }
}

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.http.entity.AbstractHttpEntity;

/**
 * File entity which supports a progress bar.<br/>
 * Based on "org.apache.http.entity.FileEntity".
 * @author Benny Neugebauer (www.bennyn.de)
 */
public class FileEntityWithProgressBar extends AbstractHttpEntity implements Cloneable
{

  protected final File file;
  private final ProgressBarListener listener;
  private long transferredBytes;

  public FileEntityWithProgressBar(final File file, final String contentType, ProgressBarListener listener)
  {
    super();
    if (file == null)
    {
      throw new IllegalArgumentException("File may not be null");
    }
    this.file = file;
    this.listener = listener;
    this.transferredBytes = 0;
    setContentType(contentType);
  }

  public boolean isRepeatable()
  {
    return true;
  }

  public long getContentLength()
  {
    return this.file.length();
  }

  public InputStream getContent() throws IOException
  {
    return new FileInputStream(this.file);
  }

  public void writeTo(final OutputStream outstream) throws IOException
  {
    if (outstream == null)
    {
      throw new IllegalArgumentException("Output stream may not be null");
    }
    InputStream instream = new FileInputStream(this.file);
    try
    {
      byte[] tmp = new byte[4096];
      int l;
      while ((l = instream.read(tmp)) != -1)
      {
        outstream.write(tmp, 0, l);
        this.transferredBytes += l;
        this.listener.updateTransferred(this.transferredBytes);
      }
      outstream.flush();
    }
    finally
    {
      instream.close();
    }
  }

  public boolean isStreaming()
  {
    return false;
  }

  @Override
  public Object clone() throws CloneNotSupportedException
  {
    return super.clone();
  }
}

import javax.swing.JProgressBar;

public class ProgressBarListener
{

  private int transferedMegaBytes = 0;
  private JProgressBar progressBar = null;

  public ProgressBarListener()
  {
    super();
  }

  public ProgressBarListener(JProgressBar progressBar)
  {
    this();
    this.progressBar = progressBar;
  }

  public void updateTransferred(long transferedBytes)
  {
    transferedMegaBytes = (int) (transferedBytes / 1048576);
    this.progressBar.setValue(transferedMegaBytes);
    this.progressBar.paint(progressBar.getGraphics());
    System.out.println("Transferred: " + transferedMegaBytes + " Megabytes.");
  }
}

public class FileEntity extends org.apache.http.entity.FileEntity {

    private OutputStreamProgress outstream;

    public FileEntity(File file, String contentType) {
        super(file, contentType);
    }

    @Override
    public void writeTo(OutputStream outstream) throws IOException {
        this.outstream = new OutputStreamProgress(outstream);
        super.writeTo(this.outstream);
    }

    /**
     * Progress: 0-100
     */
    public int getProgress() {
        if (outstream == null) {
            return 0;
        }
        long contentLength = getContentLength();
        if (contentLength <= 0) { // Prevent division by zero and negative values
            return 0;
        }
        long writtenLength = outstream.getWrittenLength();
        return (int) (100*writtenLength/contentLength);
    }
}

public class OutputStreamProgress extends OutputStream {

    private final OutputStream outstream;
    private volatile long bytesWritten=0;

    public OutputStreamProgress(OutputStream outstream) {
        this.outstream = outstream;
    }

    @Override
    public void write(int b) throws IOException {
        outstream.write(b);
        bytesWritten++;
    }

    @Override
    public void write(byte[] b) throws IOException {
        outstream.write(b);
        bytesWritten += b.length;
    }

    @Override
    public void write(byte[] b, int off, int len) throws IOException {
        outstream.write(b, off, len);
        bytesWritten += len;
    }

    @Override
    public void flush() throws IOException {
        outstream.flush();
    }

    @Override
    public void close() throws IOException {
        outstream.close();
    }

    public long getWrittenLength() {
        return bytesWritten;
    }
}