import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.Authenticator;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

import org.apache.commons.codec.binary.Base64;

public class ConnectToUrlUsingBasicAuthentication {

    public static void main(String[] args) {

        try {
            String webPage = "http://servername/webservice/ABC.asmx/GetStudentReport";
            String name = "domain.lab\sachin";
            String password = "Password123";

            //NtlmHandler handler = new NtlmHandler();

            Authenticator.setDefault(new NtlmAuthenticator(name, password));

            String authString = name + ":" + password;
            System.out.println("auth string: " + authString);
            byte[] authEncBytes = Base64.encodeBase64(authString.getBytes());
            String authStringEnc = new String(authEncBytes);
            System.out.println("Base64 encoded auth string: " + authStringEnc);

            URL url = new URL(webPage);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            //conn.setRequestProperty("Authorization", "Basic " +authStringEnc );
            conn.connect();

            System.out.println("Response Code: " + conn.getResponseCode() );

            URLConnection urlConnection = url.openConnection();
            urlConnection.setRequestProperty("Authorization", "Basic " + authStringEnc);
            InputStream is = urlConnection.getInputStream();
            InputStreamReader isr = new InputStreamReader(is);

            int numCharsRead;
            char[] charArray = new char[1024];
            StringBuffer sb = new StringBuffer();
            while ((numCharsRead = isr.read(charArray)) > 0) {
                sb.append(charArray, 0, numCharsRead);
            }
            String result = sb.toString();

            System.out.println("*** BEGIN ***");
            System.out.println(result);
            System.out.println("*** END ***");
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}

import java.net.Authenticator;
import java.net.PasswordAuthentication;

public class NtlmAuthenticator extends Authenticator {

      private final String username;
      private final char[] password;

      public NtlmAuthenticator(final String username, final String password) {
        super();
        this.username = new String(username);
        this.password = password.toCharArray();
      }

      @Override
      public PasswordAuthentication getPasswordAuthentication() {
          System.out.println("Scheme:" + getRequestingScheme() );
          System.out.println("Host:" + getRequestingHost() );
         PasswordAuthentication pa = new PasswordAuthentication(username, password);
         System.out.println("UserName:" + pa.getUserName() );
         System.out.println("Password:" + pa.getPassword().toString() );
        return pa;

}
}