Java, Class-specific Exceptions vs. Standard Exceptions

Question

I\'ve been updating an existing library to throw exceptions to help improve debugging by people using the library.

At first, I thought I\'d define exceptions specific to

Answer 1

Is it likely that a caller would need to catch FooNegativeIntArgumentException rather than IllegalArgumentException?

My guess is that it will almost never happen, so I would stick with the basic exceptions until you have cases where such differentiation can be seen to be needed.