Examples of java.net.URLConnection.connect()

java.net.URLConnection.connect()
Opens a communications link to the resource referenced by this URL, if such a connection has not already been established.
If the connect method is called when the connection has already been opened (indicated by the connected field having the value true), the call is ignored.
URLConnection objects go through two phases: first they are created, then they are connected. After being created, and before being connected, various options can be specified (e.g., doInput and UseCaches). After connecting, it is an error to try to set them. Operations that depend on being connected, like getContentLength, will implicitly perform the connection, if necessary. @throws SocketTimeoutException if the timeout expires beforethe connection can be established @exception IOException if an I/O error occurs while opening theconnection. @see java.net.URLConnection#connected @see #getConnectTimeout() @see #setConnectTimeout(int)

            // apply the checksum
            if (cs != null) {
                cs.set((HttpURLConnection) urlConnection, checksum);
            }
            
            urlConnection.connect();
            response = ((HttpURLConnection) urlConnection).getResponseCode();
            
            if (cs != null) {
                responseChecksum = cs.get((HttpURLConnection) urlConnection);
            }

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            URL url = new URL(urlString);
            urlConnection = url.openConnection();
            if (lastModified != -1) {
                urlConnection.setIfModifiedSince(lastModified);
            }
            urlConnection.connect();
            response = ((HttpURLConnection) urlConnection).getResponseCode();
            responseLastModified = urlConnection.getLastModified();
        } catch (IOException excp) {
            logger.log(Level.WARNING, "Unable to open URL for asset " +
                    urlString, excp);

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    String connection = "OK";
    final URL url = new URL("http://code.google.com/p/tamt");
    try 
    {
      final URLConnection conn = url.openConnection();
      conn.connect();
    } catch (IOException e)
    {
      connection = "NOCONNECTION";
      logger.error("Could not connect:" + e.getMessage());
    }

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        String fileName = "";
        int count;
        try {
            URL url = new URL(urlString);
            URLConnection conexion = url.openConnection();
            conexion.connect();
            // this will be useful so that you can show a tipical 0-100% progress bar
            int lenghtOfFile = conexion.getContentLength();
            fileName = urlString.substring(urlString.lastIndexOf("/") + 1);
            // downlod the file
            InputStream input = new BufferedInputStream(url.openStream());

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    String downloadLink = GoogleDownloadLinkGenerator.generateXlDownloadLink(uploadedExcelDocumentID);


    URL url = new URL(downloadLink);
    URLConnection urlConnection = url.openConnection();
    urlConnection.connect();
    InputStream input = url.openStream();
    FileWriter fw = new FileWriter("tmpOutput.kb");




    Reader reader = new InputStreamReader(input);

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    String downloadLink = GoogleDownloadLinkGenerator.generateTextDownloadLink(uploadedKbDocumentID);


    URL url = new URL(downloadLink);
    URLConnection urlConnection = url.openConnection();
    urlConnection.connect();
    InputStream input = url.openStream();
    FileWriter fw = new FileWriter("tmpOutput.kb");




    Reader reader = new InputStreamReader(input);

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                try {
                    URLConnection connection = absoluteURL.openConnection();
                    connection.setAllowUserInteraction(false);
                    connection.setDoInput(true);
                    updateURLConnection(connection, href);
                    connection.connect();
                    return new StreamSource(connection.getInputStream(), effURL);
                } catch (FileNotFoundException fnfe) {
                    // Note: This is on "debug" level since the caller is
                    // supposed to handle this
                    log.debug("File not found: " + effURL);

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     */
    public static URLType getType(URL url) throws IOException {
        if (url.toString().endsWith("/")) {
            URL metaInfURL = new URL(url, MANIFEST_LOCATION);
            URLConnection urlConnection = metaInfURL.openConnection();
            urlConnection.connect();
            try {
                InputStream is = urlConnection.getInputStream();
                is.close();
                return UNPACKED_ARCHIVE;
            } catch (IOException e) {

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            }
        } else {
            if(username != null && !username.equals("")) {
                con.setRequestProperty("Authorization", "Basic " + new String(Base64.encode((username + ":" + password).getBytes())));
                try {
                    con.connect();
                    if(monitor != null && con.getContentLength() > 0) {
                        monitor.setTotalBytes(con.getContentLength());
                    }
                    return con.getInputStream();
                } catch (FileNotFoundException e) {

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                } catch (FileNotFoundException e) {
                    return null;
                }
            } else {
                try {
                    con.connect();
                    if(monitor != null && con.getContentLength() > 0) {
                        monitor.setTotalBytes(con.getContentLength());
                    }
                    return con.getInputStream();
                } catch (FileNotFoundException e) {

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