When is it OK to use exception handling for business logic?

Question

I think it is accepted that as a general rule in Java (and perhaps any language with exception handling) one should try to avoid using exception handling to actually handle

Answer 1

Throwing an exception is a relatively expensive operation in C++, and an extremely expensive one in Java. On efficiency grounds alone, it never makes sense to avoid an explicit check and accept an exception instead. I suppose you might be able to justify it in some rare cases where checking whether an exception would be thrown is very complex or nearly impossible, but otherwise, I'd say the answer is "pretty much never."