Get the document Last-modified date
import java.net.HttpURLConnection; import java.net.URL; import java.util.Date; public class Main{ public static void main(String args[]) throws Exception { URL url = new URL("http://www.google.com"); HttpURLConnection httpCon = (HttpURLConnection) url.openConnection(); long date = httpCon.getLastModified(); if (date == 0) System.out.println("No last-modified information."); else System.out.println("Last-Modified: " + new Date(date)); } }