Google Guava / providing functional collection-type implementations

clojure, guava, java

Solution

With regards to Guava, there is a discussion on the project's discussion group here, which ends with the project lead (Kevin Bourrillion) stating his opinion that Guava would not be the correct library for persistent collections.

I don't believe there's anything like this scheduled for Java 8. A description of the plan for Java 8 here, which states the main features are Project Jigsaw, and Lambda. There will be other inclusions, but no mention of persistent collections.

Problem

Does someone know if Guava or Java8 in the future will provide persistent collection-implementations inspired by more functional implementations as for instance in Clojure or Scala (providing snapshots, efficient modifications due to sharing of tree-structures and so on)?

Original source