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Java Keywords : Set a variable to final, to prevent it from being overridden/modified
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". You will learn more about these in the Java Modifiers Chapter.
Read more about attributes our Java Class Attributes Tutorial.