NEWBIE: Please advise on returning status of constructor

Posted on 2007-04-06
Medium Priority
Last Modified: 2010-03-31
Dear Experts,

Given that constructors can't return anything, what is the preferred method of findiing out about their success?

As an example, I have a class that encapsulates a specific text file.  I try to load the text file in the constructor.  If the text file is not found, the class is worthless.  Ideally, my constructor would return a boolean, indicating it couldn't find the file.

Given that I can't do that, what's the next best thing?  I know I could set a class boolean, and then query that, but that seems awkward...

Question by:BrianMc1958
  • 2
LVL 14

Accepted Solution

CPColin earned 2000 total points
ID: 18865527
Since the class is worthless, you probably want to throw an exception so the object creation never completes. Catch it in the methods that call that constructor and you'll be able to tell when the constructor failed.

Author Comment

ID: 18865549
To CPColin:  I should have thought of that!  Once you've explained it to me, it seems obvious.  Thanks very much.
LVL 14

Expert Comment

ID: 18865556
Happy to help!

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