Krótkie wprowadzenie do Javy dla sprzedawców

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.services.androiddeviceprovisioning.v1.AndroidProvisioningPartner;
import com.google.api.services.androiddeviceprovisioning.v1.model.Company;
import com.google.api.services.androiddeviceprovisioning.v1.model.ListCustomersResponse;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.List;

/**
 * This class forms the quickstart introduction to the zero-touch enrollemnt
 * reseller API.
 */
public class ResellerQuickstart {

  // TODO: replace this with your partner reseller ID.
  private static long PARTNER_ID = 11036885;

  // Use a single scope for the all methods in the reseller API.
  private static final List<String> SCOPES =
      Arrays.asList("https://www.googleapis.com/auth/androidworkprovisioning");
  private static final String APP_NAME = "Zero-touch Reseller Java Quickstart";

  // Global shared instances.
  private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
  private static HttpTransport HTTP_TRANSPORT;

  static {
    try {
      HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
    } catch (Throwable t) {
      t.printStackTrace();
      System.exit(1);
    }
  }

  /**
   * Creates a Credential object with the correct OAuth2 authorization
   * for the service account that calls the reseller API. The service
   * endpoint invokes this method when setting up a new service instance.
   * @return an authorized Credential object.
   * @throws IOException
   */
  public static Credential authorize() throws IOException {
      // Load the service account key from the JSON file.
      InputStream in =
          ResellerQuickstart.class.getResourceAsStream("/service_account_key.json");

      // Create the credential scoped to the zero-touch enrollemnt
      // reseller APIs.
      GoogleCredential credential = GoogleCredential
         .fromStream(in)
         .createScoped(SCOPES);
      return credential;
  }

  /**
   * Builds and returns an authorized zero-touch enrollment API client service.
   * Use the service endpoint to call the API methods.
   * @return an authorized client service endpoint
   * @throws IOException
   */
  public static AndroidProvisioningPartner getService() throws IOException {
    Credential credential = authorize();
    return new AndroidProvisioningPartner.Builder(
        HTTP_TRANSPORT, JSON_FACTORY, credential)
        .setApplicationName(APP_NAME)
        .build();
  }

  /**
   * Runs the zero-touch enrollment quickstart app.
   * @throws IOException
   */
  public static void main(String[] args) throws IOException {

    // Create a zero-touch enrollment API service endpoint.
    AndroidProvisioningPartner service = getService();

    // Send an API request to list all our customers.
    AndroidProvisioningPartner.Partners.Customers.List request =
          service.partners().customers().list(PARTNER_ID);
    ListCustomersResponse response = request.execute();

    // Print out the details of each customer.
    if (response.getCustomers() != null) {
      java.util.List<Company> customers = response.getCustomers();
      for (Company customer : customers) {
          System.out.format("Name:%s  ID:%d\n",
                customer.getCompanyName(),
                customer.getCompanyId());
      }
    } else {
      System.out.println("No customers found");
    }
  }
}

gradle -q run