Can You Answer This Java Interview Question ? ArrayList remove() Trap | Small Java Dopamine– 6 | MIK

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Hi Everyone, this is the 6th video of our Playlist "Small Java Dopamine Videos" by codestorywithMIK.
📌 This series is designed to give you quick Java concept clarity in under 3 minutes - perfect for interview prep and revision.

In this short video, we cover a very common Java Collections trap:
👉 Does remove(1) remove the value 1… or the element at index 1?

This looks simple.
But in interviews, many developers confidently answer it wrong.

With ArrayList(Integer), this confusion happens a lot , especially under pressure.


💡 You will learn:
✔ Why ArrayList has two remove methods
✔ How method overloading works in this scenario
✔ Why remove(1) removes by index
✔ How to remove by value correctly
✔ The interview trick behind Integer vs int



🎯 Rule to Remember:
With ArrayList(Integer), remove(1) removes the element at index 1 — not the value 1. If you want to remove by value, use remove(Integer.valueOf(x)).

Video Name : Can You Answer This Java Interview Question ? ArrayList remove() Trap | Small Java Dopamine – 6 | codestorywithMIK


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🎥 Video Summary
ArrayList has two overloaded remove methods , remove(int index) and remove(Object o). When you pass a primitive int, Java chooses remove(int index), because it’s an exact match. That means list.remove(1) removes the element at index 1, not the value 1. To remove by value, you must explicitly pass an Integer object. This subtle difference is a favorite Java interview trap because it tests understanding of overloading and autoboxing.


✨ Timelines ✨
00:00 – Java Interview Question
00:06 – Code Snippet & Challenge
00:21 – IDE Practical Demonstration
01:38 – Visual Explanation

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