Concurrent Arrays in Java

Question

So, there is a concurrent hashmap in Java, the advantage of which is not to lock down the whole hash table, but only portions of it. I was wondering whether there was such a construction for arrays. Particularly when an array is being resized locking down the whole array is not desirable, especially in real time applications. Anything out there?

Answer 1

There is AtomicIntegerArray (and the similar AtomicReferenceArray) that may fit your description. But as noted by Marcelo - you can't resize arrays. So you only get concurrent safety without the need to explicitly lock (on) the entire array.

An array ... in which elements may be updated atomically