In object technology, a class in which none of the elements in the instances of the class can be changed. In contast, elements in a "mutable" class can be changed, and a mutable class can be a ...

My general preference is to use immutable classes and collections as often as possible. I have often used the Collections methods for returning unmodifiable collections. One drawback of the ...

Immutability is a feature of functional programming languages that makes programs easier to write, test, and maintain. However, immutability is not supported by many imperative programming languages.