Java 理论与实践: 良好的内务处理实践

    public void enumerateBar() throws SQLException {
        Statement statement = null;
        ResultSet resultSet = null;
        Connection connection = getConnection();
        try {
            statement = connection.createStatement();
            resultSet = statement.executeQuery("SELECT * FROM Bar");
            // Use resultSet
        }
        finally {
            try {
                if (resultSet != null)
                    resultSet.close();
            }
            finally {
                try {
                    if (statement != null)
                        statement.close();
                }
                finally {
                    connection.close();
                }
            }
        }
    }
    private Connection getConnection() {
        return null;
    }