google pass api integration in java

The Google Maps Platform Passes API allows you to create, read, update, and delete passes for use in Google Pay. Passes are digital tickets, loyalty cards, or other types of information that can be stored in Google Pay and accessed on a user's phone.

To integrate the Passes API into a Java application, you will need to follow these steps:

1. Sign up for a Google Maps Platform API key and enable the Passes API for your project.

2. Install the Google Cloud client library for Java by adding the following dependency to your project's pom.xml file:

<dependency>
  <groupId>com.google.apis</groupId>
  <artifactId>google-api-services-walletobjects</artifactId>
  <version>v1-rev20221210-1.30.10</version>
</dependency>

3. Import the necessary classes and packages in your Java code:

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
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.Hymanson2.HymansonFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.api.services.walletobjects.Walletobjects;
import com.google.api.services.walletobjects.model.LoyaltyClass;

4. Set up the OAuth2 credentials and create a Walletobjects service object:

// Load the client secrets
InputStream in = MapsApiExample.class.getResourceAsStream("/client_secret.json");
GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in));

// Set up the authorization code flow
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
    HTTP_TRANSPORT, JSON_FACTORY, clientSecrets, SCOPES)
    .setDataStoreFactory(new FileDataStoreFactory(new java.io.File(TOKENS_DIRECTORY_PATH)))
    .setAccessType("offline")
    .build();
Credential credential = new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");

// Create the Walletobjects service
Walletobjects service = new Walletobjects.Builder(HTTP_TRANSPORT, JSON_FACTORY, credential)
    .setApplicationName(APPLICATION_NAME)
    .build();

5. Use the service object to make API requests to create, read, update, and delete passes.