Should Instance Variables Be Final?

Instance variable: As we all know that when the value of variable is varied from object to object then that type of variable is known as instance variable. ... We have to use instance variable as final in the creation of immutable class.

Why are the instance variables final?

final is a non-access modifier for Java elements. The final modifier is used for finalizing the implementations of classes, methods, and variables. A final instance variable can be explicitly initialized only once.

Can instance variables be marked final?

Instance Variable can be marked final. ... Instance Variable cannot have a Static modifier as it will become a Class level variable. The instance variable will get a default value, which means the instance variable can be used without initializing it.