Google Calendar API Java Quickstart

Question

前提・実現したいこと

Google Calendar API Java Quickstart
Javaでカレンダーのイベントのサマリーを変更したいです。
イベント情報読取は大丈夫です。イベントの項目を変更するとエラーとなります。

発生している問題・エラーメッセージ

10 03, 2019 6:23:59 午後 com.google.api.client.util.store.FileDataStoreFactory setPermissionsToOwnerOnly
警告: unable to change permissions for everybody: C:\20190301\BCL\develop\test\test\tokens
10 03, 2019 6:23:59 午後 com.google.api.client.util.store.FileDataStoreFactory setPermissionsToOwnerOnly
警告: unable to change permissions for owner: C:\20190301\BCL\develop\test\test\tokens
Upcoming events
Exception in thread "main" com.google.api.client.googleapis.json.GoogleJsonResponseException: 403 Forbidden
{
  "code" : 403,
  "errors" : [ {
    "domain" : "global",
    "message" : "Insufficient Permission: Request had insufficient authentication scopes.",
    "reason" : "insufficientPermissions"
  } ],
  "message" : "Insufficient Permission: Request had insufficient authentication scopes."
}
	at com.google.api.client.googleapis.json.GoogleJsonResponseException.from(GoogleJsonResponseException.java:150)
	at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:113)
	at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:40)
	at com.google.api.client.googleapis.services.AbstractGoogleClientRequest$1.interceptResponse(AbstractGoogleClientRequest.java:451)
	at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:1089)
	at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:549)
	at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:482)
	at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:599)
	at test.test.App.main(App.java:119)

ソース

package test.test;

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.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.DateTime;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.api.services.calendar.Calendar;

import com.google.api.services.calendar.CalendarScopes;
import com.google.api.services.calendar.model.Event;
import com.google.api.services.calendar.model.Events;


import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.security.GeneralSecurityException;
import java.sql.Date;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.format.DateTimeFormatter;
import java.util.Collections;
import java.util.List;

import org.apache.commons.lang3.time.DateFormatUtils;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.ISODateTimeFormat;

/**
 * Hello world!
 *
 */
public class App 
{
    private static final String APPLICATION_NAME = "Google Calendar API Java Quickstart";
    private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
    private static final String TOKENS_DIRECTORY_PATH = "tokens";

    /**
     * Global instance of the scopes required by this quickstart.
     * If modifying these scopes, delete your previously saved tokens/ folder.
     */
    private static final List<String> SCOPES = Collections.singletonList(CalendarScopes.CALENDAR);
    private static final String CREDENTIALS_FILE_PATH = "C:\test\client_secret.json";
    
    /**
     * Creates an authorized Credential object.
     * @param HTTP_TRANSPORT The network HTTP Transport.
     * @return An authorized Credential object.
     * @throws IOException If the credentials.json file cannot be found.
     */
    private static Credential getCredentials(final NetHttpTransport HTTP_TRANSPORT) throws IOException {
        // Load client secrets.
        //InputStream in = CalendarQuickstart.class.getResourceAsStream(CREDENTIALS_FILE_PATH);
        InputStream in = new FileInputStream(CREDENTIALS_FILE_PATH);
        if (in == null) {
            throw new FileNotFoundException("Resource not found: " + CREDENTIALS_FILE_PATH);
        }
        GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in));

        // Build flow and trigger user authorization request.

        GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
                HTTP_TRANSPORT, JSON_FACTORY, clientSecrets, SCOPES)
                .setDataStoreFactory(new FileDataStoreFactory(new java.io.File(TOKENS_DIRECTORY_PATH)))
                .setAccessType("offline")
                .build();
        LocalServerReceiver receiver = new LocalServerReceiver.Builder().setPort(8888).build();
        return new AuthorizationCodeInstalledApp(flow, receiver).authorize("user");
    }
    
    public static void main( String[] args ) throws IOException, GeneralSecurityException, ParseException
    {
        System.out.println( "Hello World!" );
        $client = new Google_Client();
        $client->useApplicationDefaultCredentials();
        $client->addScope(Google_Service_Pubsub::PUBSUB);
        // Build a new authorized API client service.
        final NetHttpTransport HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
        Calendar service = new Calendar.Builder(HTTP_TRANSPORT, JSON_FACTORY, getCredentials(HTTP_TRANSPORT))
                .setApplicationName(APPLICATION_NAME)
                .build();
String calendarId = "******************[e-mail]";
        // List the next 10 events from the primary calendar.
        DateTime now = new DateTime(System.currentTimeMillis());
        
        Events events = service.events().list(calendarId)
                .setMaxResults(100)
                .setTimeMin(now)
                .setOrderBy("startTime")
                .setSingleEvents(true)
                .execute();

        List<Event> items = events.getItems();

        if (items.isEmpty()) {
            System.out.println("No upcoming events found.");
        } else {
            System.out.println("Upcoming events");
            for (Event event : items) {
                DateTime start = event.getStart().getDateTime();
                DateTime end = event.getEnd().getDateTime();
                String email = event.getCreator().getEmail();
                String eventId = event.getId();

                event.set("summary", event.getSummary() + " 数字：123456");
                if (start == null) { 
                    start = event.getStart().getDate();
                }
                service.events().update(calendarId, eventId, event).execute();
                System.out.printf("%s (%s)\n", event.getSummary(), start.toStringRfc3339());
            }
        }
    }
}

試したこと

SCOPES = Collections.singletonList(CalendarScopes.CALENDAR);
CALENDARに変えいました。＞＞＞ダメです。

Answer 1

この行↓を削除して、実行できました。
.setDataStoreFactory(new FileDataStoreFactory(new java.io.File(TOKENS_DIRECTORY_PATH)))

補足：
↑の方法で実行できましたが、トークンが保存されてません。
TOKENS_DIRECTORY_PATHに存在してるトークンファイルを削除すれば、↑のコードを削除せず、実行もできました。