import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.StringTokenizer;
import java.util.logging.Logger;

import com.google.appengine.api.utils.SystemProperty;
import static com.google.appengine.api.utils.SystemProperty.environment;
import static com.google.appengine.api.utils.SystemProperty.Environment.Value.Development;
import static com.google.appengine.api.utils.SystemProperty.Environment.Value.Production;

 Connection con=null;
SystemProperty.Environment.Value env = environment.value();
    if(env == Production)
    {
        System.out.println("Inside Production Phase");
        // Load the class that provides the new "jdbc:google:mysql://" prefix.
        Class.forName("com.mysql.jdbc.GoogleDriver");
        url = "jdbc:google:mysql://<my-project-id>:<cloud-sql-instance>/<database-name>?user=<user-name>&password=<database-password>&useUnicode=true&characterEncoding=UTF-8";
    }//if
    else if(env == Development)
    {
        System.out.println("Inside Development Phase");
        // This will load the MySQL driver, each DB has its own driver
        Class.forName("com.mysql.jdbc.Driver");
        url = "jdbc:mysql://127.0.0.1:3306/<database-name>?user=root";
    }//else if
    con = DriverManager.getConnection(url);