HttpURLConnection Authenticator

import java.io.DataInputStream;
import java.net.Authenticator;
import java.net.HttpURLConnection;
import java.net.PasswordAuthentication;
import java.net.URL;
import java.util.Properties;
/*java 2s .  com*/
public class Main {
  public static void main(String[] argv) throws Exception {
    byte[] b = new byte[1];
    Properties systemSettings = System.getProperties();
    systemSettings.put("http.proxyHost", "proxy.mydomain.local");
    systemSettings.put("http.proxyPort", "80");

    Authenticator.setDefault(new Authenticator() {
      protected PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication("mydomain\\username", "password".toCharArray());
      }
    });

    URL u = new URL("http://www.google.com");
    HttpURLConnection con = (HttpURLConnection) u.openConnection();
    DataInputStream di = new DataInputStream(con.getInputStream());
    while (-1 != di.read(b, 0, 1)) {
      System.out.print(new String(b));
    }
  }
}

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.Authenticator;
import java.net.InetAddress;
import java.net.PasswordAuthentication;
import java.net.URL;
/*  j a  va 2  s  .c  o  m*/
public class Main {
  public static void main(String[] argv) throws Exception {
    Authenticator.setDefault(new MyAuthenticator());
    URL url = new URL("http://hostname:80/index.html");

    BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));
    String str;
    while ((str = in.readLine()) != null) {
      System.out.println(str);
    }
    in.close();
  }
}

class MyAuthenticator extends Authenticator {
  
  protected PasswordAuthentication getPasswordAuthentication() {
    String promptString = getRequestingPrompt();
    System.out.println(promptString);
    String hostname = getRequestingHost();
    System.out.println(hostname);
    InetAddress ipaddr = getRequestingSite();
    System.out.println(ipaddr);
    int port = getRequestingPort();

    String username = "name";
    String password = "password";
    return new PasswordAuthentication(username, password.toCharArray());
  }
}