String url = "http://www.digitalcq.com/",    proxy = "proxy.digitalcq.com",    port = "8080"; URL server = new URL(url); Properties systemProperties = System.getProperties(); systemProperties.setProperty("http.proxyHost",proxy); systemProperties.setProperty("http.proxyPort",port); HttpURLConnection connection = (     HttpURLConnection)server.openConnection(); connection.connect(); InputStream in = connection.getInputStream(); readResponse(in);

public class SimpleAuthenticator    extends Authenticator {    private String username,                   password;     public SimpleAuthenticator(String username,String password)    {       this.username = username;       this.password = password;    }     protected PasswordAuthentication getPasswordAuthentication()    {       return new PasswordAuthentication(              username,password.toCharArray());    } }

String url = "http://www.digitalcq.com/",        proxy = "proxy.digitalcq.com",        port = "8080",        username = "usr",        password = "pwd"; Authenticator.setDefault(new SimpleAuthenticator(        username,password)); URL server = new URL(url); Properties systemProperties = System.getProperties(); systemProperties.setProperty("http.proxyHost",proxy); systemProperties.setProperty("http.proxyPort",port); HttpURLConnection connection = (     HttpURLConnection)server.openConnection(); connection.connect(); InputStream in = connection.getInputStream(); readResponse(in);

String url = "http://www.digitalcq.com/",        proxy = "proxy.digitalcq.com",        port = "8080",        authentication = "usr:pwd"; URL server = new URL(url); Socket socket = new Socket(proxy,port); Writer writer = new OutputStreamWriter(socket.getOutputStream(),                                        "US-ASCII"); writer.write("GET " + server.toExternalForm() + " HTTP/1.0/r/n"); writer.write("Host: " + server.getHost() + "/r/n"); writer.write("Proxy-Authorization: Basic "              + new sun.misc.BASE64Encoder().encode(                authentication.getBytes())              + "/r/n/r/n"); writer.flush(); BufferedReader reader = new BufferedReader(new InputStreamReader(                             socket.getInputStream(),"US-ASCII")); String line = reader.readLine(); if(line != null && line.startsWith("HTTP/")) {    int sp = line.indexOf(' ');    String status = line.substring(sp + 1,sp + 4);    if(status.equals("200"))    {       while(line.length() != 0)          line = reader.readLine();       readResponse(reader);    }    else       throw new FileNotFoundException("Host reports error " +                                        status); } else    throw new IOException("Bad protocol"); reader.close(); writer.close(); socket.close();