import com.google.api.services.oauth2.Oauth2;
import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson.JacksonFactory;
import com.google.api.services.analytics.Analytics;
import com.google.api.services.analytics.AnalyticsScopes;
import com.google.api.services.analytics.model.GaData;
import com.google.api.services.analytics.model.GaData.ColumnHeaders;
import com.google.api.services.analytics.model.GaData.ProfileInfo;
import com.google.api.services.analytics.model.GaData.Query;
import com.google.common.base.Preconditions;
import com.google.common.io.Files;

import java.io.File;
import java.io.IOException;
import java.nio.charset.Charset;

HttpTransport HTTP_TRANSPORT = new NetHttpTransport();
JsonFactory JSON_FACTORY = new JacksonFactory();
String TABLE_ID = "ga:1";
String SERVICE_EMAIL = "the long [email protected]"

GoogleCredential credentials = new GoogleCredential.Builder()
.setTransport(HTTP_TRANSPORT)
.setJsonFactory(JSON_FACTORY)
.setServiceAccountId(SERVICE_EMAIL)
.setServiceAccountScopes(AnalyticsScopes.ANALYTICS_READONLY)
.setServiceAccountPrivateKeyFromP12File(new File("/root/key.p12"))
.build();

Analytics analytics = new Analytics.Builder(HTTP_TRANSPORT, JSON_FACTORY, credentials)
.build();

GaData gaData = analytics.data().ga()
       .get(TABLE_ID,                  // Table Id.
            "2012-08-01",              // Start date.
            "2012-09-01",              // End date.
            "ga:visits")               // Metrics.
       .setDimensions("ga:source,ga:keyword")
       .setSort("-ga:visits,ga:source")
       .setFilters("ga:medium==organic")
       .setMaxResults(25)
       .execute();