Use proxy to do a http connection in Java

/*from   www  . j  av a2s  .c o  m*/

import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Properties;

import sun.misc.BASE64Encoder;

public class Main {
  public static void main(String[] argv) throws Exception {
    Properties systemSettings = System.getProperties();
    systemSettings.put("proxySet", "true");
    systemSettings.put("http.proxyHost", "proxy.mycompany.local");
    systemSettings.put("http.proxyPort", "80");

    URL u = new URL("http://www.google.com");
    HttpURLConnection con = (HttpURLConnection) u.openConnection();
    BASE64Encoder encoder = new BASE64Encoder();
    String encodedUserPwd = encoder.encode("domain\\username:password".getBytes());
    con.setRequestProperty("Proxy-Authorization", "Basic " + encodedUserPwd);
    con.setRequestMethod("HEAD");
    System.out.println(con.getResponseCode() + " : " + con.getResponseMessage());
    System.out.println(con.getResponseCode() == HttpURLConnection.HTTP_OK);
  }
}