Difference between concurrentHashMap and HashTable ?

Interview Questions and Answers

Q1. Difference between concurrentHashMap and HashTable ?

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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Related Questions

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 ?

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