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.

1)String value are stored in dynamic memory (managed heap) and variables of type string keep a reference to an object in heap. 2)The character sequence stored in string variable of class are immutable ...