Jul 23, 2025 · But how in java Set interface implemented classes like HashSet, LinkedHashSet, TreeSet etc. achieve this uniqueness. In this post, we will discuss the hidden truth behind this …

Apr 18, 2023 · HashSet internally uses HashMap to store it’s elements. Whenever you create a HashSet object, one HashMap object associated with it is also created. This HashMap object …

Nov 19, 2015 · When we have a look at the HashSet.java in java API, we can see the following code: Set achieves the uniqueness in its elements through HashMap. In HashMap, each key …

Dec 11, 2017 · In this article, we outlined the utility of a HashSet, its purpose as well as its underlying working. We saw how efficient it is in terms of usability given its constant time …

Aug 14, 2025 · This tutorial demystifies the internals of HashSet, how it leverages HashMap, its performance profile, and how to use it effectively in enterprise-grade Java applications.

It does not allow duplicate elements. It provides constant-time performance for basic operations like add, remove, contains, assuming a good hash function. However, HashSet is not backed …

Jun 24, 2025 · Learn how HashSet works in Java. Understand its internal structure, performance characteristics, and practical use cases.

Oct 19, 2025 · Learn how Java’s HashSet works internally with HashMap. This guide explains how hashCode () and equals () ensure uniqueness, how elements are stored in buckets, and …

n this video, we will explore the Internal Working of HashSet in Java in a simple yet detailed way.Although HashSet looks different from HashMap, it actually...

May 21, 2025 · HashSet is a class in Java‘s Collections Framework that implements the Set interface. At its core, HashSet stores elements in a hash table, which is essentially an array …