public void sendRequest  ( )
{
if ( responseFileName.trim( ).length( ) == 0)
    {
    responseFileName = requestFileName + ".out.xml" ;
    }
 
try
    {
    //    Construct the request connection to service
 
    System.setProperty("java.protocol.handler.pkgs", 
        "com.sun.net.ssl.internal.www.protocol" ) ;
 
    URL
        url = new URL ( serviceUrl );
 
    URLConnection
        urlConnection = (URLConnection) url.openConnection();
 
    urlConnection.setDoInput(true);
    urlConnection.setDoOutput(true);
 
    OutputStream
        requestOutputStream = urlConnection.getOutputStream();
 
    writeFileToStream ( requestOutputStream ) ;
 
    requestOutputStream.close();
 
    //    Get ready to read the response
 
    InputStream
        responseInputStream = null;
 
    try
        {
        responseInputStream = urlConnection.getInputStream();
        }
    catch (Exception e)
        {
        displayResponse ( urlConnection ) ;
        return;
        }
 
    displayResponse ( urlConnection ) ;
    writeStreamToFile ( responseInputStream ) ;
    }
catch (Throwable e)
    {
    e.printStackTrace();
    }
}