Definition - What does Final mean?
Final is a keyword which is used to define an entity that cannot be changed nor derived from later. The final keyword is used in three different contexts. For example, afinal class, final method, andfinal variables.
Techopedia explains Final
Final class: When a class is declared as final, it cannot be extended. A class can be declared as final in situations where the class is logically complete.
Final Method: When the method is declared as final then the method cannot be overriden by the subclass.
Final Variables: Once the variable is declared as final then the value of the variable cannot be changed.
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