Is Java 8 findFirst().isPresent() more efficient than count() > 0?

Question

Given I have a stream Stream stream = list.stream().filter(some predicate) where the list is very large, is it more efficient to check whether the stream

Answer 1

I would recommend using list.stream().anyMatch(some predicate), which is a terminal operation for exactly this case. It's not only more efficient than stream.count(), but it won't hang on infinite streams.