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26 Ιουλ 2021 · ConcurrentHashMap is a hash table supporting full concurrency of retrievals and high expected concurrency for updates. This class obeys the same functional specifications as Hashtable and includes all methods of Hashtable. ConcurrentHashMap is in java.util.Concurrent package. Syntax: public class ConcurrentHashMap<K,V> extends AbstractMap<
31 Αυγ 2023 · 1. Find candidates with advanced knowledge and application of Selenium. Challenging questions give candidates an opportunity to showcase advanced knowledge, explain how Selenium works, why it functions the way it does, and how it can be used to overcome obstacles and accomplish role-specific tasks. 2. Identify and evaluate candidates’ soft skills.
Hashtable is belongs to the Collection framework; ConcurrentHashMap belongs to the Executor framework. Hashtable uses single lock for whole data. ConcurrentHashMap uses multiple locks on segment level (16 by default) instead of object level i.e. whole Map.
8 Ιαν 2024 · Hashtable locks the entire table during a write operation, thereby preventing other reads or writes. This could be a bottleneck in a high-concurrency environment. ConcurrentHashMap, however, allows concurrent reads and limited concurrent writes, making it more scalable and often faster in practice.
13 Ιουν 2024 · Prepare for your next Selenium interview with these commonly asked questions and detailed answers. Improve your confidence and performance by reviewing this curated list of interview questions.
5 Ιαν 2024 · Unlike the traditional Hashtable, ConcurrentHashMap provides better concurrency and performance by dividing the map into segments, allowing multiple threads to operate on different segments simultaneously.
Basic Selenium Interview Questions. 1. What is Selenium? State its components. Selenium is a suite of tools that are used explicitly for automated web testing purposes. Its components are the Selenium IDE (Integrated Development Environment), WebDriver and RC, and Grid. 2. How are Selenium 2.0 and Selenium 3.0 different?
