Go into more detail, like by asking you to provide an implementation of the 4 to 6 years, where you expect the Interviewer to This core Java question is also very popular on senior and more experienced How ConcurrentHashMap internally works in Java Only a portion of the ConcurrentHashMap is locked, instead of the This is worth looking atīefore you decide to write your own read-write lockingĪlso, the current implementation of doesn't use the ReadWriteLock, instead, it divides the Map into several segments and locks them Java provides an implementation of a read-write lock in the form ofĬlass in the package. Without locking, and by splitting one lock into the read and write lock, you can easily do that. It's safe to allow multiple thread access to a shared object for reading Since the read operation doesn't modify the state of the object, Technique, where two separate locks are used for reading and write ReadWrite Lock? ReadWrite Lock is an implementation of a lock stripping What is Read-Write Lock? Does ConcurrentHashMap in Java Use The What is Busy Spinning? Why Should You Use It in Java?Ģ. They have seen these questions onĭifferent rounds of their core Java interviews, including telephonic andįace-to-face rounds on different companies, mostly on Investment banks likeġ. Technical interviews of big tech companies like Amazon, Facebook, Google,ġ5 Core Java Questions For 5 to 6 Years Experienced All these questions have been collected from quite senior developers, which Out Cracking the Coding Interview, which contains almost 150 programming questions and solutions from If you want to prepare more on the coding side then you can also check A perfect companion to do well in Java interviews. It also covers knowledge of other JVM languages like Scala, Groovy, and other GC tuning, Hibernate and Spring interview questions, JUnit ant unit testing Include basic Java questions, data structure and algorithms, JVM internals and If you are in a hurry and actively looking for a Java Developer Job, you canĪlso take help from some good books written to prepare you for Java J2EEĬover all important topics for both core Java and Java EE interviews, which Questions on here or on the Javarevisited blog. I am not posting answers as of now, but you can find answers to most of the Of experience in different interviews, mostly on In this article, I am going to share some 15 technical core Java Interview Questions, which I have seen asked senior and experienced developers of 4 to 6 years
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