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What happens if a final keyword is applied to function?
A final function can not be overridden for any subclass. This means any class which extends our class with a final function can not redefine the functionality of our final function. if you have: public class Top{ public final doSomething(){ System.out.println("hi"); } } You can not do this: public class Buttom extends Top{ public final doSomething(){ // NO! YOU CAN'T CHANGE THIS FUNCTION System.out.println("good-bye"); // THIS CODE DOES NOT COMPILE } }
What if a final keyword is applied to a function?
The final keyword in JAVA means that the class can no longer be derived, i.e. it cannot be used as a base class for a new child class.If you declare a method as final, this method cannot be overridden in any of the child class that may extend this class.
What are final class?
class is identifier
What is the final keyword in Java?
The final keyword precedes a declared constant which after Instantiation cannot be modified. Examples. final double PI = 3.14; PI = 1234; // does not compile //or final double ONE; ONE = 1; // Instantiated ONE = 2; // does not compile ---------------------------------------- final keyword can also apply to a method or a class. When applied to a method - it means the method cannot be over-ridden. Specially useful when a method assigns a state that should not be changed in the classes that inherit it, and should use it as it is (not change the method behaviour). When applied to a class it means that the class cannot be instantiated. A common use is for a class that only allows static methods as entry points or static final constants - to be accessed without a class instance. A good example is Java's: public final class Math extends Object
How does the final keyword affect the behavior of Object type in Java?
In Java, the final keyword specifies that the object created cannot be further redefined or derived.
What is the activating effect of the keyword on the overall outcome?
The activating effect of the keyword influences the final result.
Can you make a class final in java?
yes of course... using the final keyword
When do you declare a class as final?
By using the final keyword in the class declaration statement. Ex: public final class Test {...}
Can final keyword be applied to static variables and methods?
In the case of variables, the two can be combined. This occurs, for example, with the fields Math.PI and Math.E. I am not sure about methods, but I see no reason why you shouldn't be able to combine the two in this case.
What is the significance of the keyword "end" in the final verse of a song called?
The keyword "end" in the final verse of a song signifies closure, completion, or finality. It often serves as a powerful conclusion to the song's message or theme.
What does the final keyword mean in front of a variable a method a class?
When used in a class declaration, the final keyword means the a class can't be subclassed. In other words, no other class can extend (inherit) a final class, and any attempts to do so will give you a compiler error. The final keyword prevents a method from being overridden in a subclass. Final methods are usually placed in classes where you don't want anyone who is extending your code to meddle with a certain piece of functionality. Declaring a variable with the final keyword makes it impossible to reassign a different value to that variable once it has been initialized with an explicit value -
Can you declears static in a local variable in a method in java?
we cannot use the staic keyword inside the method... But we can use the final keyword inside the method....
