The Right Approach to Exceptions

[Juan Manuel Cabo]

> This works:
> // note: the int parameter above isn't static
> dbConn.query("select age from people where id='foobar'");
> throw new WithErrorCode!FileNotFoundException(
>           db.rs.getValue(1), "file not found");
...
> Can you offer a real world use-case where the above isn't sufficient?


What happened is that a file wasn't found. What one wants to catch is
a FileNotFoundException.

Do you suggest that I have to:

   try {
       ...
   } catch (FileNotFoundException ex) {
       ...
   } catch (WithErrorCode!FileNotFoundException ex) {
       ...
   } catch (WithRainbows!FileNotFoundException ex) {
       ...
   }
and so on?

--jm