### Question:
URLUtil { public static URL makeURLWithPath(String url, String... path) throws RdapClientException { if (path != null && path.length != 0) { return makeURLWithPath(url, Arrays.asList(path)); } else { return makeURL(url); } } private  URLUtil(); static URL makeURL(String url); static URL makeURLWithPath(String url, String... path); static URL makeURLWithPath(String url, List<String> path); static URL makeURLWithParam(String url, Map<String, String> param); static URL makeURLWithPathAndParam(String url,
            Map<String, String> param, String... path); static URL makeURLWithPathAndParam(String url,
            Map<String, String> param, List<String> path); static boolean isHttps(URL url);  }### Answer:
@Test public void test_makeURLWithPath() { String urlString; try { urlString = URLUtil.makeURLWithPath(url, "ip", "192.168.1.1") .toString(); } catch (RdapClientException e) { urlString = null; } assertEquals(urlWithPath, urlString); }
@Test public void test_makeURLWithPath_list() { String urlString; try { List<String> list = new ArrayList<String>(); list.add("ip"); list.add("192.168.1.1"); urlString = URLUtil.makeURLWithPath(url, list).toString(); } catch (RdapClientException e) { urlString = null; } assertEquals(urlWithPath, urlString); }