public Connection connectToDatabase(String adress, int port) {
        Properties connectionProps = new Properties();
        connectionProps.put("user", "root");
        connectionProps.put("password", "root");
        try {
            connection = DriverManager.getConnection("jdbc:mysql://" + adress + ":" + port + "/",
                    connectionProps);
        } catch (SQLException e) {
        	System.out.println("Error when connecting to the database");
            e.printStackTrace();
        }
        return connection;
    }