Swap Two Numbers in Java Without Using Third Variable | Java Logic Explained
⚡ Want to master one of the most asked Java interview questions? In this video, you'll learn how to swap two numbers in Java *without using a third (temporary) variable* — using only arithmetic logic!
This is a must-know trick for every Java beginner, student, or anyone preparing for coding interviews. We’ll break down the logic step-by-step, write clean code, and demonstrate the output with full explanation.
🎯 What you'll learn in this video:
🔸 Java logic to swap numbers without a temp variable
🔸 Step-by-step code walkthrough (perfect for beginners)
🔸 Real-time output demo with explanation
🔸 Smart programming logic used in interviews
🔸 Common mistakes and how to avoid them
💡 Why you should know this:
This logic improves your coding skills, helps in writing memory-efficient code, and is frequently asked in technical interviews and college viva questions.
📌 Example Output:
Before Swapping: a = 10, b = 20
After Swapping: a = 20, b = 10
🎓 Who should watch this?
🔸 Java Beginners
🔸 Java programmer
🔸 B.Tech / BCA / MCA Students
🔸 Class 11 & 12 CS Students
🔸 Coding Interview Aspirants
🔸 Interview prep and logic-building
🔸 Anyone learning Java programming from scratch
📺 Watch Next:
👉 Find the area of a rectangle → • Area of Rectangle in Java | Java Program f...
👉 Full Java Program Playlist → • Java Coding Questions for Interviews
💬 Comment below which Java logic you want next — factorial, reverse number, Fibonacci, palindrome, armstrong, or something else!
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