Jar file is incompatible on java 8 about rest-samples HOT 2 CLOSED

HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();
HttpRequestFactory httpRequestFactory = httpTransport.createRequestFactory();

GenericUrl objectUrl = new GenericUrl(String.format("https://walletobjects.googleapis.com/walletobjects/v1/genericObject/%s.%s", issuerId, objectSuffix));

// Build a payload for an object
// Make sure to include all required properties
// for this object type
String objectPayload = String.format(
    "{"
  + "  \"id\": \"%s.%s\","
  + "  \"classId\": \"%s.%s\""
  + "}",
  issuerId, objectSuffix, issuerId, classSuffix);

// Check if the object exists already
// Build a GET request
HttpRequest objectRequest = httpRequestFactory.buildGetRequest(objectUrl);

// Add auth to the request headers
objectRequest
    .setHeaders(new HttpHeaders()
        .setAuthorization("Bearer " + credentials.getAccessToken().getTokenValue()));

// Invoke the GET request
HttpResponse objectResponse = objectRequest.execute();

if (objectResponse.getStatusCode() == 404) {
  // Object does not yet exist
  // Send POST request to create it
  // Include the JSON payload
  objectRequest = httpRequestFactory.buildPostRequest(
      objectUrl,
      new JsonHttpContent(new GsonFactory(), objectPayload));

  // Add auth to the request
  objectRequest
      .setHeaders(new HttpHeaders()
          .setAuthorization("Bearer " + credentials.getAccessToken().getTokenValue()));

  // Invoke the POST request
  objectResponse = objectRequest.execute();
}

System.out.println("object GET or POST response: " + objectResponse.parseAsString());