Program: 87115
Project: 87115
Buggy source:
public static boolean downloadFile(final URL url,final File dest,final JProgressBar bar,final JProgressBar fullBar,JLabel speedLabel){
  bar.setIndeterminate(true);
  FileOutputStream fos=null;
  BufferedReader reader=null;
  try {
    URI uri=new URI(url.getProtocol(),url.getUserInfo(),url.getHost(),url.getPort(),url.getPath(),url.getQuery(),url.getRef());
    URL url2=uri.toURL();
    URLConnection connection=url2.openConnection();
    int fileLength=connection.getContentLength();
    if (fileLength == -1) {
      System.out.println("String_Node_Str");
      return false;
    }
 else {
      bar.setMaximum(fileLength);
    }
    InputStream in=connection.getInputStream();
    reader=new BufferedReader(new InputStreamReader(in));
    fos=new FileOutputStream(dest);
    long downloadStartTime=System.currentTimeMillis();
    int downloadedAmount=0;
    byte[] buff=new byte[1024];
    bar.setValue(0);
    bar.setIndeterminate(false);
    int n;
    while ((n=in.read(buff)) != -1) {
      fos.write(buff,0,n);
      bar.setValue(bar.getValue() + n);
      fullBar.setValue(fullBar.getValue() + n);
      downloadedAmount+=n;
      long timeLapse=System.currentTimeMillis() - downloadStartTime;
      if (timeLapse >= 1000L) {
        float downloadSpeed=downloadedAmount / (float)timeLapse;
        downloadedAmount=0;
        downloadStartTime+=1000L;
        DecimalFormat df=new DecimalFormat();
        df.setMaximumFractionDigits(2);
        if (downloadSpeed > 1000.0F) {
          speedLabel.setText("String_Node_Str" + String.valueOf(df.format(downloadSpeed / 1024F)) + "String_Node_Str");
        }
 else {
          speedLabel.setText("String_Node_Str" + String.valueOf(df.format(downloadSpeed)) + "String_Node_Str");
        }
      }
    }
  }
 catch (  Exception e) {
    e.printStackTrace();
    return false;
  }
 finally {
    try {
      fos.flush();
      fos.close();
      reader.close();
    }
 catch (    IOException e) {
      e.printStackTrace();
      return false;
    }
  }
  return true;
}

Fixed version (ground truth):
public static boolean downloadFile(final URL url,final File dest,final JProgressBar bar,final JProgressBar fullBar,JLabel speedLabel){
  bar.setIndeterminate(true);
  FileOutputStream fos=null;
  BufferedReader reader=null;
  try {
    URI uri=new URI(url.getProtocol(),url.getUserInfo(),url.getHost(),url.getPort(),url.getPath(),url.getQuery(),url.getRef());
    URL url2=uri.toURL();
    URLConnection connection=url2.openConnection();
    int fileLength=connection.getContentLength();
    if (fileLength == -1) {
      System.err.println("String_Node_Str");
      return false;
    }
 else {
      bar.setMaximum(fileLength);
    }
    InputStream in=connection.getInputStream();
    reader=new BufferedReader(new InputStreamReader(in));
    fos=new FileOutputStream(dest);
    long downloadStartTime=System.currentTimeMillis();
    int downloadedAmount=0;
    byte[] buff=new byte[1024];
    bar.setValue(0);
    bar.setIndeterminate(false);
    int n;
    while ((n=in.read(buff)) != -1) {
      fos.write(buff,0,n);
      bar.setValue(bar.getValue() + n);
      fullBar.setValue(fullBar.getValue() + n);
      downloadedAmount+=n;
      long timeLapse=System.currentTimeMillis() - downloadStartTime;
      if (timeLapse >= 1000L) {
        float downloadSpeed=downloadedAmount / (float)timeLapse;
        downloadedAmount=0;
        downloadStartTime+=1000L;
        DecimalFormat df=new DecimalFormat();
        df.setMaximumFractionDigits(2);
        if (downloadSpeed > 1000.0F) {
          speedLabel.setText("String_Node_Str" + String.valueOf(df.format(downloadSpeed / 1024F)) + "String_Node_Str");
        }
 else {
          speedLabel.setText("String_Node_Str" + String.valueOf(df.format(downloadSpeed)) + "String_Node_Str");
        }
      }
    }
  }
 catch (  Exception e) {
    e.printStackTrace();
    return false;
  }
 finally {
    try {
      fos.flush();
      fos.close();
      reader.close();
    }
 catch (    IOException e) {
      e.printStackTrace();
      return false;
    }
  }
  return true;
}