Java Create a ConcurrentHashMap

SAMER SAEID answered on May 4, 2022 Popularity 10/10 Helpfulness 3/10

answer Java Create a ConcurrentHashMap

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Java Create a ConcurrentHashMap

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// ConcurrentHashMap with capacity 8 and load factor 0.6
ConcurrentHashMap<Key, Value> numbers = new ConcurrentHashMap<>(8, 0.6f);

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Contributed on May 25 2022

SAMER SAEID

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Maps are naturally one of the most widely style of Java collection.

And, importantly, HashMap is not a thread-safe implementation, while Hashtable does provide thread-safety by synchronizing operations.

Even though Hashtable is thread safe, it is not very efficient. Another fully synchronized Map, Collections.synchronizedMap, does not exhibit great efficiency either. If we want thread-safety with high throughput under high concurrency, these implementations aren't the way to go.

To solve the problem, the Java Collections Framework introduced ConcurrentMap in Java 1.5.

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Contributed on May 04 2022

Delta Sierra

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Java Create a ConcurrentHashMap

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