Is there an equivalent of boost::multi_index for Java someplace? -

I stumbled over multi_index on a lava last night, while I was pounding against one of the collections for which Different key values, and also the rebalancing array arithmetic is well promoted to one of my two wishes (3 different key values): Multi-index

I'm curious if something similar Java exists in the world.

I have just ended the Multi Index container in Java: I know that this multi-index boost Is not equal to giving, but maybe it may be enough for your requirement.