and a mutable class can be a subclass of an immutable class. See class. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

Other goals include aligning final fields in normal classes with components ... the proposal says Java developers rely on final fields to represent immutable state. The expectation that a final ...

Java strings are created and manipulated through the string class. Once created, a string is immutable -- its value cannot be changed. A string is sequence of characters. A class is a user-defined ...