Java Program to Double Each Character in String 🔥🚀⚡🔥

Published: 10 May 2026
on channel: Build Stack
87
3

🚀 In this video, you will learn how to write a Java program to double each character in a string using StringBuilder and a for-each loop.
✅ Topics Covered:


String handling in Java


toCharArray() method


StringBuilder usage


Loop through characters

   • Java Program to Double Each Character in S...  

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💻 Example:
Input: pall
Output: ppaallllll
This program is very useful for Java beginners and coding interview preparation.
🔹 Technologies Used:


Core Java


StringBuilder


For-each Loop


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