Hey, I like checked exceptions too! I honestly think it’s one of Javas’s best features but it’s hindered by the fact that try-catch is so verbose, libraries aren’t always sensible about what exceptions they throw, and methods aren’t exception-polymorphic for stuff like the Stream API. Which is to say, checked exceptions are a pain but that’s the fault of the rest of the language around them and not the checked exceptions per se.

If you don’t need to reuse the collection or access its items out of order, you can also use Iterable which accepts even more inputs like generators.

Out of curiosity, what is that spoilered book?