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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; 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));     }   } }