java - to get URL address -

How to get the address of the URL, while the page is fresh in Java every time ..? I am doing a project for which the URL (domain name) is required, while every TIE page is refreshed .. !!

Request URL string URL = request.getRequestURL () Getting ToString (); // get the servlet request query string string query string = request.getQueryString (); // Receive information request without hostname string uri = request.getRequestURI ();