What is final?

In Java, final is a keyword. It has the following impact on variables, methods, and classes:

• If a variable declaration is preceded by the final keyword, then its value cannot be changed in the program.
• If in a method declaration, the method name is preceded by the final keyword, then that method cannot be overridden.
• If in a class declaration, the class name is preceded by the final keyword, then that class cannot be inherited.

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