Java Deque Interface Explained: ArrayDeque vs LinkedList | Java Mastery Series

Published: 08 June 2026
on channel: Beat99.Academy
14
like

Master the Java Deque Interface! In this tutorial, we dive into the Double-Ended Queue (Deque) and see why it is one of the most flexible and powerful data structures in the Java Collections Framework.

We start by exploring the core Deque interface to understand how it allows you to efficiently insert and remove elements from both the front and the back. Then, we look at how to use a Deque to perfectly implement both Stack (LIFO) and Queue (FIFO) behaviors without relying on legacy classes. Finally, we tackle a massive Java interview question: what is the exact difference between ArrayDeque and LinkedList, and which one should you choose for maximum performance?

Whether you are tackling LeetCode problems or prepping for a backend engineering interview, this video covers everything you need to know about Java Deques!

⏳ Chapters:
0:00 - Deque Interface
8:25 - Deque as Stack & Queue
9:08 - ArrayDeque vs LinkedList

📌 Resources & Links:
Practice DSA with us: https://beat99.academy
Full Java Mastery Playlist:    • Java Mastery Series  

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