---
title: "Discussion on \"How Java HashMaps Work – Internal Mechanics Explained\" | Hashnode"
description: "Discussion on \"How Java HashMaps Work – Internal Mechanics Explained\". A HashMap is one of the most commonly used data structures in Java, and it's known for its efficiency. Data in a HashMap is stored in the form of key-value pairs.\nIn this article, I will introduce you to HashMaps in Java. We will explore the common o..."
url: "https://hashnode.com/posts/how-java-hashmaps-work-internal-mechanics-explained/66b677afa502c749ffbb5c36"
---

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# [How Java HashMaps Work – Internal Mechanics Explained](https://freecodecamp.org/news/how-java-hashmaps-work-internal-mechanics-explained?utm_source=hashnode&utm_medium=feed)

A HashMap is one of the most commonly used data structures in Java, and it's known for its efficiency. Data in a HashMap is stored in the form of key-value pairs. In this article, I will introduce you to HashMaps in Java. We will explore the common o...

Aug 9, 2024 · 7 min read · freecodecamp.org  
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-   [#hashmap](https://hashnode.com/tag/hashmap)
-   [#collection-framework](https://hashnode.com/tag/collection-framework)

## Written by

[Anjan Baradwaj](https://hashnode.com/@anjanbaradwaj)

@anjanbaradwaj · Bangalore, India

  
[View profile](https://hashnode.com/@anjanbaradwaj)

Principal Engineer. Learner. Writer.

Principal software engineer, passionate about learning and writing - technologies and otherwise

## Responses

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[Anjan Baradwaj](https://hashnode.com/@anjanbaradwaj)

[Aug 14, 2024](https://hashnode.com/posts/how-java-hashmaps-work-internal-mechanics-explained/66b677afa502c749ffbb5c36/comment/66bca4e91b2efc0149507a87)

In my latest blog post, I dive into the internals of how a HashMap works in Java. Give it a read and share it!

#HashMap #Java #DataStructures