Concurrent Collection Interview questions and Answers for experienced and freshers | Code Decode

This video contains Concurrent Collection Interview questions and Answers for experienced and freshers Candidates. Udemy Course of Code Decode on Microservice k8s AWS CICD link: https://openinapp.co/udemycourse Course Description Video : https://yt.openinapp.co/dmjvd Concurrent collection IQ Part 2 :    • Java Tricky Concurrent Collection Intervie...   Concurrent collection is a very important topic in terms of collection interview questions and answers for experienced and answers Q) Difference between Synchronized Collection and Concurrent Collection? Both Synchronized and Concurrent Collection classes provide thread-safety The differences between them comes in performance, scalability and how they achieve thread-safety. Synchronized collections like synchronized HashMap are much slower than their concurrent counterparts e.g. ConcurrentHashMap, Main reason for this slowness is locking; What is the need of concurrent collection Traditional collections are not thread safe. only few classes like Vector, HashTable are thread safe. Collections provide some methods like synchronizedList, synchronizedMap, synchronizedSet those provide thread safety but problem is they capture lock on complete collection even for reading that decreases performance. In traditional collection if one thread iterates and other tries to modify structural change then ConcurrentModificationException is thrown. Give few concurrent collections classes ? ConcurrentHashMap CopyOnWriteArrayList CopyOnWriteArraySet Why performance of ConcurrentHashMap is better than HashTable and synchronizedMap ? In HashTable and synchronizedMap lock is acquired on complete collection so only single thread can capture lock at a time while in ConcurrentHashMap lock is acquired on bucket level so at a time multiple thread can capture lock on different different bucket. Promotional Links Registration link: https://relvl.co/t6e upGrad(BD) https://relvl.co/tl2 Urban Company(BD) https://relvl.co/zhu Vedantu(BD) https://relvl.co/ul4 Curefit(BD) https://relvl.co/dw7 Cred(FD) https://relvl.co/qke Digit(FD) https://relvl.co/g1c Razorpay(BE) https://relvl.co/tbl Yellow Messenger(BE) https://relvl.co/8gp Cred(BE) https://relvl.co/5kq 1mg(BE) https://relvl.co/vqm Digit(BE) https://relvl.co/8m3 Code Decode Playlists Most Asked Core Java Interview Questions and Answers :    • Core Java frequently asked Interview Quest...   Advance Java Interview Questions and Answers :    • Advance Java Interview Questions   Java 8 Interview Questions and Answers :    • Java 8 Interview Questions(New Features)   Hibernate Interview Questions and Answers :    • Hibernate Interview Questions Java   Spring Boot Interview Questions and Answers :    • Advance Java Interview Questions   Angular Playlist :    • Angular Course Introduction || Angular 8   GIT :    • GIT   ------------------------------------------------------------------------------------------------------------------------------------- Subscriber and Follow Code Decode Subscriber Code Decode : https://www.youtube.com/c/CodeDecode?... Linkedin :   / codedecodeyoutube   Instagram :   / codedecode25   -------------------------------------------------------------------------------------------------------------------------------------- #javacollectioninterviewquestion #topjavacollectioninterveiwquestion #javainterviewquestion #codedecode