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|Ans. ConcurrentHashMap is a hashMap that allows concurrent modifications from multiple threads as there can be multiple locks on the same hashmap.|
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|Like Discuss Correct / Improve  java   collections   hashmap   map   concurrenthashmap   concurrenthashmap  concurrency   general electric   ge Asked in 32 Companies   rare|
|What is ConcurrentModificationException ?|
|What is a BlockingQueue?|
|What is concurrent interface ?|
|What is ConcurrentLinkedDeque ?|
|What is CopyOnWriteArrayList ?|
|What are the advantages and disadvantages of CopyOnWriteArrayList ?|
|Name few Concurrent Collection Classes ?|
|Difference between concurrentHashMap and HashTable ?|
|isnt the use of HashTable and ConcurrentHashMap the same, i.e providing synchronized map collection ?|