public URLDataSource(URL url) 
{
        this.url = url;
}

URLDataSource constructor. The URLDataSource class will not open a connection to the URL until a method requiring it to do so is called.

Parameters:

url - The URL to be encapsulated in this object.

 public String getContentType() 
{
        String type = null;
        try {
            if (url_conn == null)
                url_conn = url.openConnection();
        } catch (IOException e) { }
        if (url_conn != null)
            type = url_conn.getContentType();
        if (type == null)
            type = "application/octet-stream";
        return type;
}

Returns the value of the URL content-type header field. It calls the URL's URLConnection.getContentType method after retrieving a URLConnection object. Note: this method attempts to call the openConnection method on the URL. If this method fails, or if a content type is not returned from the URLConnection, getContentType returns "application/octet-stream" as the content type.

 public InputStream getInputStream() throws IOException 
{
        return url.openStream();
}

The getInputStream method from the URL. Calls the openStream method on the URL.

 public String getName() 
{
        return url.getFile();
}

Calls the getFile method on the URL used to instantiate the object.

 public OutputStream getOutputStream() throws IOException 
{
        // get the url connection if it is available
        url_conn = url.openConnection();
        if (url_conn != null) {
            url_conn.setDoOutput(true);
            return url_conn.getOutputStream();
        } else
            return null;
}

The getOutputStream method from the URL. First an attempt is made to get the URLConnection object for the URL. If that succeeds, the getOutputStream method on the URLConnection is returned.

 public URL getURL() 
{
        return url;
}

Return the URL used to create this DataSource.