Iterating over this set requires time proportional to the sum of the HashSet instance's size (the number of elements) plus the "capacity" of the backing HashMap instance (the number of buckets).

Nov 22, 2025 · HashSet in Java implements the Set interface of the Collections Framework. It is used to store the unique elements, and it doesn't maintain any specific order of elements.

Java HashSet A HashSet is a collection of elements where every element is unique. It is part of the java.util package and implements the Set interface.

In this tutorial, we will learn about the Java HashSet class. We will learn about different hash set methods and operations with the help of examples.

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 performance and …

Oct 29, 2025 · Working with a HashSet in Java involves a few important operations like adding, removing, and accessing elements. This section will discuss each operation with practical Java …

Apr 1, 2025 · A HashSet in Java is a collection class that implements the Set interface, which means it stores a collection of unique elements. It does not allow duplicate elements.

Apr 9, 2025 · This blog covers the HashSet class in Java, explaining its key features, constructors, commonly used methods, performance characteristics, and practical examples. Learn how HashSet …

Jun 18, 2024 · Discover the essentials of Java HashSets, from basic operations to advanced usage. Perfect for beginners and a great refresher for experienced developers.

May 23, 2025 · The `HashSet` class in Java provides an efficient way to store and manage such collections. It is part of the Java Collections Framework and offers a powerful set of features for …