public void insertUser(UserData userData) throws SQLException {
		if (conn != null) {
			User user = new User(userData.id, userData.firstName, userData.lastName, userData.gender, userData.age);
			user.insert(conn);
			
			Availability availability = new Availability(userData.id, userData.email, userData.address);
			availability.insert(conn);
			
			Interest interest = new Interest(userData.id, userData.sport);
			interest.insert(conn);
		}
	}