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|Java - Interview Questions and Answers|
|Ans. HashTable locks the complete collection to provide synchronization whereas ConcurrentHashMap only locks segments to achieve synchronization and hence better efficient and faster.|
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|Like Discuss Correct / Improve  concurrentHashMap  HashTable  Map  Collections Asked in 2 Companies|
|What is a ConcurrentHashMap ?|
|isnt the use of HashTable and ConcurrentHashMap the same, i.e providing synchronized map collection ?|
|If a Map needs to be accessed simultaneously by multiple threads, which collection class should be used ?|
|How ConcurrentHashMap provides better performance compared to HashTable ?|
|Why do we need ConcurrentHashMap ?|
|Isnt the use of HashTable and ConcurrentHashMap the same, i.e providing synchronized map collection ?|
|How many read and write operations are provided at the same time by ConcurrentHashMaps ?|
|Is ConcurrentHashMap synchronized ?|