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Final Keyword

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Fichas del conjunto (5)

1What is final Keyword?- Final in Java is a keyword
- It is used to specify an entity can be assigned only once
-The keyword final comes into the picture for restricting user
- final can be applicable to variables, methods and class
2Usage of Java final keyword- before an instance variable
- before a method
- before a class
3final instance variable- final variables can not be reassigned
- if we try to do will get compiler error
4final before a method- final methods cannot be overridden
- if we try to do will get compiler errors
5final before a class- Final class can not be extended
- If we try to do will get compiler error