code: public static void runExample(
        AdWordsServicesInterface adWordsServices,
        AdWordsSession session,
        Long adGroupId,
        Long keywordId)
        throws RemoteException {
      // Get the AdParamService.
      AdParamServiceInterface adParamService =
          adWordsServices.get(session, AdParamServiceInterface.class);
  
      // Create ad params.
      AdParam adParam1 = new AdParam();
      adParam1.setAdGroupId(adGroupId);
      adParam1.setCriterionId(keywordId);
      adParam1.setInsertionText("100");
      adParam1.setParamIndex(1);
  
      AdParam adParam2 = new AdParam();
      adParam2.setAdGroupId(adGroupId);
      adParam2.setCriterionId(keywordId);
      adParam2.setInsertionText("$40");
      adParam2.setParamIndex(2);
  
      // Create operations.
      AdParamOperation adParamOperation1 = new AdParamOperation();
      adParamOperation1.setOperand(adParam1);
      adParamOperation1.setOperator(Operator.SET);
  
      AdParamOperation adParamOperation2 = new AdParamOperation();
      adParamOperation2.setOperand(adParam2);
      adParamOperation2.setOperator(Operator.SET);
  
      AdParamOperation[] operations = new AdParamOperation[] {adParamOperation1, adParamOperation2};
  
      // Set ad parameters.
      AdParam[] adParams = adParamService.mutate(operations);
  
      // Display ad parameters.
      for (AdParam adParam : adParams) {
        System.out.printf("Ad parameter with ad group ID %d, criterion ID %d, insertion text "
            + "'%s', and parameter index %d was set.%n", adParam.getAdGroupId(), 
            adParam.getCriterionId(), adParam.getInsertionText(), adParam.getParamIndex());
      }
    }
docs: Runs the example.
  
  @param adWordsServices the services factory.
  @param session the session.
  @param adGroupId the ID of the ad group of the keyword.
  @param keywordId the ID of the keyword.
  @throws ApiException if the API request failed with one or more service errors.
  @throws RemoteException if the API request failed due to other errors.