- ConcurrentHashMap is a thread-safe implementation of the Map interface in Java, designed specifically for concurrent access by multiple threads without the...
- A ConcurrentHashMap can be used as scalable frequency map (a form of histogram or multiset) by using LongAdder values and initializing via computeIfAbsent .
- In this tutorial, we will learn about the Java ConcurrentHashMap class and its operations with the help of examples.
- Additionally, the ConcurrentHashMap provides various methods for atomic operations such as putIfAbsent(), replace(), and remove().
- ConcurrentHashMap is the out-of-box ready ConcurrentMap implementation. For better performance, it consists of an array of nodes as table buckets (used to be...
- The ConcurrentHashMap has all equivalent methods of Hashtable class. 3. All operations of ConcurrentHashMap are thread safe except retrieval.
- ConcurrentHashMap, in java.util.concurrent, improves performance by using a different locking strategy than HashTable or Synchronized HashMap.
- We know, HashMap is not synchronized and therefore is not thread safe. To overcome this issue, collections framework provides ConcurrentHashMap.
- ConcurrentHashMap is a part of the Java Collections Framework and provides a thread-safe implementation of the Map interface.
- A ConcurrentHashMap can be used as scalable frequency map (a form of histogram or multiset) by using LongAdder values and initializing via #computeIfAbsent.