Get updated URL

Question

I am trying to get the latidute and the longitude from the URL. My current code:

public void getCoordinate(String city) {
    try {
        URL current = new URL("https://google.de/maps/place/" + city);
        URLConnection currentConnection = current.openConnection();

        System.out.println("Current: " + current.toString());

        Thread.sleep(180 * 40L);

        URL updated = currentConnection.getURL();

        System.out.println("Now: " + updated.toString());

    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (InterruptedException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

My idea: I call the side with the City i want and after a few seconds, i get the new URL which contains the longitude and the latitude. When i try it manually, i do this steps:

1. Insert the URL with the given City
2. Wait a few seconds and the URL changes
3. Use the new URL to work with it

My problem is, I don't know, how to get the updated URL.