In this tutorial, we’ll explore the concept of a shallow vsdeep copyof aHashMapalong with several techniques to copy aHashMapin Java. We’ll also consider some of the external libraries that can help us in spe
Exception in thread "main" java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793) at java.util.HashMap$KeyIterator.next(HashMap.java:828) at com.test.ConcurrentHashMapExample.main(ConcurrentHashMapExample.java:44) It’s clear from the output thatCo...
In “How HashMap works in Java“, we learned the internals of HashMap or ConcurrentHashMap class and how they fit into the whole concept. But when the interviewer asks you about HashMap related concepts, he does not stop only on the core concept. The discussion usually goes in multiple d...
I am assuming that if you are interested in the internal working of HashMap, you already know the basics of HashMap, so I’m skipping that part. But if you are new to the concept, follow official java docs. Single Statement Answer If anybody asks me to describe “How HashMap works?”...
In my previous post related to “How HashMap works in java“, I explained the internals of HashMap class and how they fit into whole concept. But when interviewer ask you about HashMap related concepts, he does not stop only on core concept. The discussion usually goes in multiple directio...
In Java, object references can be of many types. Let’s discuss them before digging further into the concept of weak keys inWeakHashMap. 3.1. Strong References, Soft References and Weak References Strong referencesare the references we create in a normal program. These are simple variable assig...
In this article, we explored the concept of hashmaps and demonstrated how to implement a hashmap using jQuery. We discussed the benefits of using a hashmap and highlighted some common use cases. By leveraging the power of jQuery and hashmaps, developers can improve the efficiency and performa...
Since ConcurrentHashMap introduced concept of segmentation , how large it becomes only certain part of it get locked to provide thread safety so many other readers can still access map withoutwaiting for iteration to complete. So if you want to store large amount of data in a multithreaded prog...
It is a computer implementation of the mathematical concept of a finite set. Unlike most other collection types, rather than retrieving a specific element from a set, one typically tests an element for membership in a set. This structed is often used to ensure that no duplicates are present ...
It is a computer implementation of the mathematical concept of a finite set. Unlike most other collection types, rather than retrieving a specific element from a set, one typically tests an element for membership in a set. This structed is often used to ensure that no duplicates are present ...