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Java: how to access to a URL via proxy

Java: how to access to a URL via proxy
{filelink=9063}

import java.io.DataInputStream;
import java.io.FileOutputStream;
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 {
    byte[] b = new byte[1];
    Properties systemSettings = System.getProperties();
    systemSettings.put("http.proxyHost", "proxy.mydomain.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("mydomainusername:password".getBytes());
    con.setRequestProperty("Proxy-Authorization", "Basic " + encodedUserPwd);
    DataInputStream di = new DataInputStream(con.getInputStream());
    while (-1 != di.read(b, 0, 1)) {
      System.out.print(new String(b));
    }
  }
}

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