StringBuffer and StringBuilder

# StringBuffer and StringBuilder in Java: A Definitive Guide Are you ready to master efficient [String Manipulation](https://techielearn.com/learn/data-structures-and-algorithms/strings/string-manipulation) in Java? The `String` class in Java is immutable, meaning its value cannot be changed after creation. While this has its advantages, it can lead to performance issues when you need to modify strings frequently. That's where `StringBuffer` and `StringBuilder` come in. These classes provid