What is final keyword in Java interview questions?
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Final keyword in java is used to make any class or a method or a field as unchangeable. You can’t extend a final class, you can’t override a final method and you can’t change the value of a final field. Final keyword is used to achieve high level of security while coding.
The final keyword is a non-access modifier used for classes, attributes and methods, which makes them non-changeable (impossible to inherit or override).
The final keyword is useful when you want a variable to always store the same value, like PI (3.14159…).
The final keyword is called a “modifier”.