java - Intersection of multiple sets (as collections)

Question

How can you find the intersection of multiple (more than two) sets in Java?

retainAll by itself wont work since I need the ability to get the intersection between more than just two sets

Answer 1

You can use the Set's retainAll(other) method which retains only items that are in both sets. It alters the original set, so you may want to take a copy of the set first (use the appropriate constructor).