I have written these codes during learning. I learned Java from Telusko channel in YouTube.

🧠 Java StringBuilder vs StringBuffer – Concepts & Program 📌 Task Overview Today’s focus: Understanding StringBuilder and StringBuffer in Java. We explored mutability, thread safety, and basic usage.

As we know in Java String is immutable means we cannot reassign a new value to the same string object. That's why in Java to provide mutability we use either StringBuffer or StringBuilder.