import java.io.BufferedInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.Authenticator;
import java.net.PasswordAuthentication;
import java.net.URL;
public class MainClass {
public static void main(String args[]) throws Exception {
Authenticator.setDefault(new DialogAuthenticator());
URL u = new URL("secure url");
InputStream in = u.openStream();
in = new BufferedInputStream(in);
Reader r = new InputStreamReader(in);
int c;
while ((c = r.read()) != -1) {
System.out.print((char) c);
}
}
}
class DialogAuthenticator extends Authenticator {
public DialogAuthenticator() {
}
public PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication("username", "password".toCharArray());
}
}