[1] Repost http://javabypatel.blogspot.com/2016/09/concurrenthashmap-interview-questions.html Question 1. What is the need of ConcurrentHashMap when there is HashMap and Hashtable already present? Performance and Thread safety are 2 parameter on which ConcurrentHashMap is focused. Imagine a sc...
Popular HashMap and ConcurrentHashMap interview questions In this tutorial we will go over all above queries and reasonwhy and howwe could Synchronize Hashmap? Why? The Map object is an associative containers that store elements, formed by a combination of a uniquely identifykeyand a mappe...
Let's the code to actually generate a concurrent hash set in Java 8: importjava.util.Set;importjava.util.concurrent.ConcurrentHashMap;/* * Java Program to create ConcurrentHashSet from ConcurrentHashMap * This code requires JDK 8 because we use newKeySet() method * which is only available...
can by tricky. The majority of them provide concurrent access by default but concurrency can be treated in a blocking or non – blocking manner. ABlockingQueueimplementation class supports operations that wait for the queue to become non-empty when retrieving an element, and wait for space...