Which of these is an incorrect statement?

1. String objects are immutable, they cannot be changed.
2. When you assign a new value to a String object, Java internally creates another String object.
3. StringBuffer is a mutable class that can store sequence of characters.
4. String objects are actually arrays of characters.

String objects are actually arrays of characters.

Reason — String are classes in Java. Array of characters is one of the data members of String class.