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 …

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.

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 …

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

Nov 12, 2025 · Understanding `HashSet` is crucial for Java developers as it has various applications, from eliminating duplicates in a list to implementing data caching strategies. This …

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 …

May 21, 2025 · In this comprehensive guide, I‘ll walk you through everything you need to know about HashSet—from basic concepts to advanced techniques—so you can write more …

This tutorial will cover all methods of HashSet with examples and outputs, highlighting key points, use cases, best practices, performance considerations, and a real-time example with CRUD …

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.