Explain difference between Srting class and StringBuider class.

The main difference between the String class and the StringBuilder class in Java lies in their mutability and performance characteristics.

String Class:

1. Immutable: The String class in Java is immutable, meaning that once a String object is created, its value cannot be changed. Any operation that seems to modify a String actually creates ___ ____ ____ _____ ________ __________ _________ _________ _________ __________.
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