Day28-Swap Two Numbers With and Without Using Third Variable in Java | Java Developers 2025

In this video, you will learn how to swap two numbers in Java using two different methods:

1️⃣ Swapping with a third variable
2️⃣ Swapping without using a third variable

This is one of the most important Core Java programs and is frequently asked in:

Coding interviews

College exams

Java viva & placements

We will explain:

Step-by-step logic

Java code for both methods

How swapping works internally

Common mistakes beginners make

This tutorial is perfect for Java beginners and students who want to improve logic-building skills.

👉 Watch till the end to clearly understand both approaches.

00:00 – Introduction
00:30 – What is Swapping?
01:10 – Swap Using Third Variable (Logic)
02:40 – Java Code (With Third Variable)
04:00 – Output Explanation
05:00 – Swap Without Third Variable (Logic)
06:30 – Java Code (Without Third Variable)
08:10 – Output Explanation
09:00 – Interview Questions
09:40 – Conclusion
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