Index
1. Java Introduction 2. Datatypes in Java 3. Variables in Java 4. Access Modifiers in Java 5. Abstract Class in Java 6. Final Keyword in Java 7. Java Encapsulation 8. Interface in Java 9. Java Arrays 10. Arraylist Java 11. Java Iterator 12. LinkedList Java 13. Linked list vs Arraylist Java 14. Stack in Java 15. Java Queue 16. Java HashSet 17. Java Generic Methods 18. Java Generic ReturnTypesFinal Keyword in Java
The final keyword in java is used to make declarations final. Once done you never ever change it. Sometimes programmer does not want that other programmer can use its complicated written methods or classes and extend the features using Inheritance in Java. So final keyword helps to get this job done. Let's explore the final methods, final variables & final classes.
final class
The final class can never be overridden. Yes, you cannot extend the class which is declared as final. The following figure clear your concept.
final method
The final method cannot be overridden by the subclass. Yes, you cannot extend the method also which is declared as final. The following figure will clear your concept .
final variables
The final variables cannot be changed once it is initialised. final variable cannot be assigned a new value. The following figure will clear your concept .
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