ContactsService

               ContactsService service = new ContactsService("OScar");
                if (userName == null || password == null) {
                        return new ArrayList<Member>();
                }
                service.setUserCredentials(userName, password);

                List<Member> members = new ArrayList<Member>();

                // Request the feed
                URL feedUrl = new URL("https://www.google.com/m8/feeds/contacts/default/full");
                ContactFeed resultFeed = service.getFeed(feedUrl, ContactFeed.class);
                // Print the results
                System.out.println(resultFeed.getTitle().getPlainText());
                for (ContactEntry entry : resultFeed.getEntries()) {}