---
title: "Discussion on \"Implementing a Custom HashMap in Java\" | Hashnode"
description: "Discussion on \"Implementing a Custom HashMap in Java\". Introduction\nHashMap is a widely used data structure for performing insertion, retrieval, and deletion operations in almost O(1) time complexity. Due to its simplicity, it is extensively Used. Today, we'll take a closer look at how HashMap works and ..."
url: "https://hashnode.com/posts/implementing-a-custom-hashmap-in-java/65743aa875fb676b99ea14be"
---

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# [Implementing a Custom HashMap in Java](https://mdsadiqmd.hashnode.dev/implementing-a-custom-hashmap-in-java?utm_source=hashnode&utm_medium=feed)

Introduction HashMap is a widely used data structure for performing insertion, retrieval, and deletion operations in almost O(1) time complexity. Due to its simplicity, it is extensively Used. Today, we'll take a closer look at how HashMap works and ...

Dec 9, 2023 · 7 min read · mdsadiqmd.hashnode.dev  
Updated Dec 10, 2023  
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