Immutable

Definition

Immutable refers to an object or data structure that cannot be changed after it is created. Once created, its state remains constant throughout its lifetime.

Related terms

Mutable: This term describes objects or data structures that can be modified after creation. Unlike immutable objects, mutable ones can have their state altered.

Final Keyword:

In Java programming language, using the "final" keyword makes variables constant and classes uninheritable. It ensures immutability and prevents modification.

String Class: Strings in many programming languages are often immutable objects by default. Any modifications to strings create new string objects rather than modifying existing ones.