What is the use of final keyword in Java?Select one:All of themWhen a method is final, it can not be overriddenWhen a variable is final, it can be assigned value only onceWhen a class is made final, a subclass of it can not be created
Question
What is the use of final keyword in Java?Select one:All of themWhen a method is final, it can not be overriddenWhen a variable is final, it can be assigned value only onceWhen a class is made final, a subclass of it can not be created
Solution
The final keyword in Java is used in several ways:
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When a method is final, it cannot be overridden: This means that if you declare a method as final in a superclass, then child classes (subclasses) cannot override this method, ensuring that the implementation of the method remains constant and cannot be changed by subclasses.
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When a variable is final, it can be assigned a value only once: After a final variable has been assigned, it always contains the same value. If a final variable holds a reference to an object, then the state of the object may be changed by operations on the object, but the variable will always refer to the same object. This is useful for creating constants.
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When a class is made final, a subclass of it cannot be created: If you make a class final, you cannot extend it. This means you cannot create a subclass from a final class. This is often done for security reasons, to prevent classes from being subclassed and methods from being overridden.
So, the answer is "All of them".
Similar Questions
What are the correct statements on final key word?Select one or more:final method and it cannot be overridden in the subclassFinal is a keyword or reserved word in Java and can be applied to member variables, methods, class and local variables in Java.The final class is complete in nature and it can be sub-classed or inheritedOnce you make a reference final you are not allowed to change that reference and compiler will verify this and raise a compilation error if you try to re-initialized final variables in Java
What is the purpose of the finalize() method in Java? A. To create a new object B. To refer to the current class object C. To ensure that an object terminates cleanly before being destroyed D. To declare a new instance of a class
What is the primary purpose of declaring a class as final in Java?a.To prevent the class from having any public methods.b.To ensure the class cannot be instantiated.c.To ensure the class cannot be extended or modified by other classes.d.To allow inheritance but restrict method overriding.
What is the purpose of the final keyword in Java?OptionsTo prevent a method from being overriddenTo prevent a class from being inheritedTo prevent a variable from being reassignedAll of these
False statement about final method in javaSelect one:Constructor can be declared as final.Final method is inherited but we cannot override itValue of final variable cannot be changed once initialized.If you make a class final then you cannot extend the class
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