01_CalendarAppSkeleton.java

import java.io.IOException;
import java.security.GeneralSecurityException;

import com.google.api.client.auth.oauth.OAuthHmacSigner;
import com.google.api.client.auth.oauth.OAuthParameters;
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.client.util.ArrayMap;
import com.google.api.services.calendar.Calendar;
import com.google.api.services.calendar.CalendarRequest;
import com.google.api.services.calendar.CalendarRequestInitializer;

public class CalendarAppSkeleton {
	public static void main(String[] args) {
		System.setProperty("https.proxyHost", "127.0.0.1");
		System.setProperty("https.proxyPort", "8888");

		try {
			HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();
			
			JsonFactory jacksonFactory = JacksonFactory.getDefaultInstance();

			OAuthHmacSigner signer = new OAuthHmacSigner();
			signer.clientSharedSecret = "xxxxxxxxxxxxxx";

			OAuthParameters oauthParameters = new OAuthParameters();
			oauthParameters.consumerKey = "example.com";
			oauthParameters.signer = signer;

			CalendarRequestInitializer initializer = new CalendarRequestInitializer() {

				@Override
				protected void initializeCalendarRequest(
						CalendarRequest<?> calendarRequest) throws IOException {
					ArrayMap<String, Object> customKeys = new ArrayMap<String, Object>();
					customKeys.add("xoauth_requestor_id",
							"suzuki@example.com");
					calendarRequest.setUnknownKeys(customKeys);
					calendarRequest.setKey("xxxxxxxxxxxxx_xxxxxxxxxxxx");
				}
			};

			Calendar service = new Calendar.Builder(
					httpTransport, jacksonFactory, oauthParameters)
					.setApplicationName("CalendarSample")
					.setCalendarRequestInitializer(initializer).build();

			// write your process

		} catch (GeneralSecurityException e) {
			System.err.println(e.getMessage());
		} catch (IOException e) {
			System.err.println(e.getMessage());
		}
		System.exit(1);
	}
}

02_GetCalendarListApp.java

import java.io.IOException;
import java.security.GeneralSecurityException;

import com.google.api.client.auth.oauth.OAuthHmacSigner;
import com.google.api.client.auth.oauth.OAuthParameters;
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.client.util.ArrayMap;
import com.google.api.services.calendar.Calendar;
import com.google.api.services.calendar.CalendarRequest;
import com.google.api.services.calendar.CalendarRequestInitializer;
import com.google.api.services.calendar.model.CalendarList;
import com.google.api.services.calendar.model.CalendarListEntry;

public class GetCalendarListApp {
	public static void main(String[] args) {
		System.setProperty("https.proxyHost", "127.0.0.1");
		System.setProperty("https.proxyPort", "8888");

		try {
			HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();
			
			JsonFactory jacksonFactory = JacksonFactory.getDefaultInstance();

			OAuthHmacSigner signer = new OAuthHmacSigner();
			signer.clientSharedSecret = "xxxxxxxxxxxxxx";

			OAuthParameters oauthParameters = new OAuthParameters();
			oauthParameters.consumerKey = "example.com";
			oauthParameters.signer = signer;

			CalendarRequestInitializer initializer = new CalendarRequestInitializer() {

				@Override
				protected void initializeCalendarRequest(
						CalendarRequest<?> calendarRequest) throws IOException {
					ArrayMap<String, Object> customKeys = new ArrayMap<String, Object>();
					customKeys.add("xoauth_requestor_id",
							"suzuki@example.com");
					calendarRequest.setUnknownKeys(customKeys);
					calendarRequest.setKey("xxxxxxxxxxxxx_xxxxxxxxxxxx");
				}
			};

			Calendar service = new Calendar.Builder(
					httpTransport, jacksonFactory, oauthParameters)
					.setApplicationName("CalendarSample")
					.setCalendarRequestInitializer(initializer).build();

			System.out.println("Your calendars:");
			System.out.println();
			CalendarList feed = service.calendarList().list().execute();
			for (CalendarListEntry entry : feed.getItems()) {
			    System.out.println();
			    System.out.println("-----------------------------------------------");
			    System.out.println("ID: " + entry.getId());
			    System.out.println("Summary: " + entry.getSummary());
			    if (entry.getDescription() != null) {
			      System.out.println("Description: " + entry.getDescription());
			    }
			}

		} catch (GeneralSecurityException e) {
			System.err.println(e.getMessage());
		} catch (IOException e) {
			System.err.println(e.getMessage());
		}
		System.exit(1);
	}
}

03_GetEventsApp.java

import java.io.IOException;
import java.security.GeneralSecurityException;

import com.google.api.client.auth.oauth.OAuthHmacSigner;
import com.google.api.client.auth.oauth.OAuthParameters;
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.client.util.ArrayMap;
import com.google.api.services.calendar.Calendar;
import com.google.api.services.calendar.CalendarRequest;
import com.google.api.services.calendar.CalendarRequestInitializer;
import com.google.api.services.calendar.model.Event;
import com.google.api.services.calendar.model.Events;

public class GetEventsApp {
	public static void main(String[] args) {
		System.setProperty("https.proxyHost", "127.0.0.1");
		System.setProperty("https.proxyPort", "8888");

		try {
			HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();
			
			JsonFactory jacksonFactory = JacksonFactory.getDefaultInstance();

			OAuthHmacSigner signer = new OAuthHmacSigner();
			signer.clientSharedSecret = "xxxxxxxxxxxxxx";

			OAuthParameters oauthParameters = new OAuthParameters();
			oauthParameters.consumerKey = "example.com";
			oauthParameters.signer = signer;

			CalendarRequestInitializer initializer = new CalendarRequestInitializer() {

				@Override
				protected void initializeCalendarRequest(
						CalendarRequest<?> calendarRequest) throws IOException {
					ArrayMap<String, Object> customKeys = new ArrayMap<String, Object>();
					customKeys.add("xoauth_requestor_id",
							"suzuki@example.com");
					calendarRequest.setUnknownKeys(customKeys);
					calendarRequest.setKey("xxxxxxxxxxxxx_xxxxxxxxxxxx");
				}
			};

			Calendar service = new Calendar.Builder(
					httpTransport, jacksonFactory, oauthParameters)
					.setApplicationName("CalendarSample")
					.setCalendarRequestInitializer(initializer).build();

			System.out.println("Show events:");
			System.out.println();
			Events feed = service.events().list("primary").execute();
			for (Event entry : feed.getItems()) {
			    System.out.println();
			    System.out.println("-----------------------------------------------");
			    System.out.println(entry.getSummary());
			    if (entry.getStart() != null) {
			        System.out.println("Start Time: " + entry.getStart());
			    }
			    if (entry.getEnd() != null) {
			        System.out.println("End Time: " + entry.getEnd());
			    }
			}

		} catch (GeneralSecurityException e) {
			System.err.println(e.getMessage());
		} catch (IOException e) {
			System.err.println(e.getMessage());
		}
		System.exit(1);
	}
}

04_AddEventApp.java

import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.Date;
import java.util.TimeZone;

import com.google.api.client.auth.oauth.OAuthHmacSigner;
import com.google.api.client.auth.oauth.OAuthParameters;
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.client.util.ArrayMap;
import com.google.api.client.util.DateTime;
import com.google.api.services.calendar.Calendar;
import com.google.api.services.calendar.CalendarRequest;
import com.google.api.services.calendar.CalendarRequestInitializer;
import com.google.api.services.calendar.model.Event;
import com.google.api.services.calendar.model.EventDateTime;

public class AddEventApp {
	public static void main(String[] args) {
		System.setProperty("https.proxyHost", "127.0.0.1");
		System.setProperty("https.proxyPort", "8888");

		try {
			HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();
			
			JsonFactory jacksonFactory = JacksonFactory.getDefaultInstance();

			OAuthHmacSigner signer = new OAuthHmacSigner();
			signer.clientSharedSecret = "xxxxxxxxxxxxxx";

			OAuthParameters oauthParameters = new OAuthParameters();
			oauthParameters.consumerKey = "example.com";
			oauthParameters.signer = signer;

			CalendarRequestInitializer initializer = new CalendarRequestInitializer() {

				@Override
				protected void initializeCalendarRequest(
						CalendarRequest<?> calendarRequest) throws IOException {
					ArrayMap<String, Object> customKeys = new ArrayMap<String, Object>();
					customKeys.add("xoauth_requestor_id",
							"suzuki@example.com");
					calendarRequest.setUnknownKeys(customKeys);
					calendarRequest.setKey("xxxxxxxxxxxxx_xxxxxxxxxxxx");
				}
			};

			Calendar service = new Calendar.Builder(
					httpTransport, jacksonFactory, oauthParameters)
					.setApplicationName("CalendarSample")
					.setCalendarRequestInitializer(initializer).build();

			Event event = new Event();
			event.setSummary("New Event");
			Date startDate = new Date();
			Date endDate = new Date(startDate.getTime() + 3600000);
			DateTime start = new DateTime(startDate, TimeZone.getTimeZone("UTC"));
			event.setStart(new EventDateTime().setDateTime(start));
			DateTime end = new DateTime(endDate, TimeZone.getTimeZone("UTC"));
			event.setEnd(new EventDateTime().setDateTime(end));

			Event result = service.events().insert("primary", event).execute();
			System.out.println();
		    System.out.println("-----------------------------------------------");
		    System.out.println(result.getSummary());
		    if (result.getStart() != null) {
		        System.out.println("Start Time: " + result.getStart());
		    }
		    if (result.getEnd() != null) {
		        System.out.println("End Time: " + result.getEnd());
		    }

		} catch (GeneralSecurityException e) {
			System.err.println(e.getMessage());
		} catch (IOException e) {
			System.err.println(e.getMessage());
		}
		System.exit(1);
	}
}