How to save list items on disk instead of memory in Java

Question

I\'m looking for a data structure same as ArrayList in Java that saves items on disk instead of memory. Does java have such a data structure? Thanks

I want to have a

Answer 1

MapDB (mapdb.org) is a library that persists java objects to disk in various collections: Sets, Maps, Queues.

It supports caching so you can have your most frequent items in memory.