ConcurrentHashMap in Java? - Stack Overflow
May 14, 2010 · What is the use of ConcurrentHashMap in Java? What are its benefits? How does it work? Sample code would be useful too.
How does ConcurrentHashMap work internally? - Stack Overflow
The ConcurrentHashMap is very similar to the java.util.HashTable class, except that ConcurrentHashMap offers better concurrency than HashTable or synchronizedMap does. …
Why there is no ConcurrentHashSet against ConcurrentHashMap
Aug 9, 2011 · Why there is no ConcurrentHashSet against ConcurrentHashMap Asked 14 years, 2 months ago Modified 1 year, 7 months ago Viewed 350k times
ConcurrentHashMap vs Synchronized HashMap - Stack Overflow
Aug 18, 2009 · 7 ConcurrentHashMap uses finer-grained locking mechanism known as lock stripping to allow greater degree of shared access. Due to this it provides better concurrency …
Performance ConcurrentHashmap vs HashMap - Stack Overflow
How is the performance of ConcurrentHashMap compared to HashMap, especially .get () operation (I'm especially interested for the case of only few items, in the range between maybe …
java - Is ConcurrentHashMap totally safe? - Stack Overflow
However, although ConcurrentHashMap is a thread-safe drop-in replacement for HashMap, it is important to realize that if you are doing multiple operations you may have to change your …
java - When to use ConcurrentHashMap - Stack Overflow
Use ConcurrentHashMap only when the class where it's being used is thread safe; otherwise the use of a thread safe data structure in a non thread safe class adds to the confusion of the next …
What's the difference between ConcurrentHashMap and …
Feb 4, 2009 · The ConcurrentHashMap uses very sophisticated techniques to reduce the need for synchronization and allow parallel read access by multiple threads without synchronization …
java - ConcurrentHashMap computeIfAbsent - Stack Overflow
There is a new computeIfAbsent API introduced in Java 8. The javadocs for ConcurrentHashMap's impelementation of it state: If the specified key is not already …
Why does ConcurrentHashMap prevent null keys and values?
They probably just wanted to make ConcurrentHashMap fully compatible/interchangeable to Hashtable. And as Hashtable does not allow null keys and values..