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By Javin_Paul
Published: Aug 07 2014 / 07:58

ConcurrentHashMap was added in Java 1.5 but still many programmers are not familiar of it. It's one of the most useful concurrent collection class in Java, but how did it achieve it's scalability and improved performance over synchronized HashMap and Hashtable is popular Java question. This article explains How does ConcurrentHashMap works in Java, How it achieves it's thread-safety and How to use them in your Java program.
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