Java 8 collector for Guava immutable collections?

Question

I really like Java 8 streams and Guava\'s immutable collections, but I can\'t figure out how to use the two together.

For example, how do I implement a Java 8 Collec

Answer 1

Although it doesn't answer specifically the question, it's noteworthy to mention that this simple pattern can help everyone building Guava's immutable collections from streams without having the need for Collectors (as their implementations are rather hard to make).

Stream stream = ...

ImmutableXxx collection = ImmutableXxx.copyOf(stream.iterator());