public static void runExample( AdWordsServices adWordsServices, AdWordsSession session, Long adGroupId) throws Exception { // Enable validation. session.setValidateOnly(true); // Get the validation AdGroupAdService. AdGroupAdServiceInterface adGroupAdValidationService = adWordsServices.get(session, AdGroupAdServiceInterface.class); // Create text ad. TextAd textAd1 = new TextAd(); textAd1.setHeadline("Luxury Cruise to Mars"); textAd1.setDescription1("Visit the Red Planet in style."); textAd1.setDescription2("Low-gravity fun for everyone!"); textAd1.setDisplayUrl("www.example.com"); textAd1.setFinalUrls(new String[] {"http://www.example.com"}); // Create ad group ad. AdGroupAd textAdGroupAd1 = new AdGroupAd(); textAdGroupAd1.setAdGroupId(adGroupId); textAdGroupAd1.setAd(textAd1); // Create operations. AdGroupAdOperation textAdGroupAdOperation1 = new AdGroupAdOperation(); textAdGroupAdOperation1.setOperand(textAdGroupAd1); textAdGroupAdOperation1.setOperator(Operator.ADD); AdGroupAdOperation[] operations = new AdGroupAdOperation[] {textAdGroupAdOperation1}; // Add ads. adGroupAdValidationService.mutate(operations); // No error means the request is valid. // Now let's check an invalid ad using a very long line to trigger an error. textAd1.setDescription2("Low-gravity fun for all astronauts in orbit."); try { adGroupAdValidationService.mutate(operations); } catch (ApiException e) { System.err.println("Validation failed for reason \"" + e.getMessage1() + "\"."); } }