private void ensureStructure() {
		try (Statement statement = openStatement()) {
			ResultSet rs = statement.executeQuery("SELECT time FROM scores");
		} catch (SQLException e) {
			try {
                Statement s = openStatement();
				s.executeUpdate("CREATE TABLE scores(" +
						"time INT)");
			} catch (SQLException e1) {
				e1.printStackTrace();
			}
		}
	}