On 05/10/14 18:18, Andrei Alexandrescu wrote:
Exceptions are all about centralized error handling. How, and how often, would you handle FileNotFoundException differently than PermissionDeniedException?
Probably not that often. But I don't think it's up to "File" to decide that. I think "File" should throw a specific error as possible containing all details it has. Then it's up to the user of "File" how to handle the exception. If you're not interested in the differences between FileNotFoundException and PermissionDeniedException, then catch the base class instead.
The details provided between these two exception could be different as well. FileNotFoundException should contain the path of the file that wasn't found. PermissionDeniedException should contain some information about if it was the source or target that caused the exception to be thrown. Think of a copy or move operation.
How would one localize error messages if the specific exception is not known?
-- /Jacob Carlborg
