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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

Question

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

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Solution

The purpose of the final keyword in Java is all of these. It can be used to prevent a method from being overridden, to prevent a class from being inherited, and to prevent a variable from being reassigned.

  1. When used with a method, the final keyword prevents that method from being overridden in a subclass. This is useful when you want a method to always behave in a certain way, regardless of any subclasses that extend the parent class.

  2. When used with a class, the final keyword prevents the class from being subclassed. This is often done for security reasons, to prevent unauthorized code modification.

  3. When used with a variable, the final keyword makes that variable a constant, meaning it cannot be changed after it is initialized. This is useful for defining values that should not be changed, like the value of pi or the number of days in a week.

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Similar Questions

What is the purpose of the "final" keyword in Java?Question 12Answera.It makes a method or variable constant and cannot be overridden or modified.b.It indicates that a method or variable is shared among all instances of a class.c.It indicates that a method or variable belongs to the instance of a class.d.It makes a method or variable non-accessible.

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.

Which keyword is used to prevent method overriding in Java?a.staticb.finalc.abstractd.protected

Which keyword is used to call the superclass method in the overridden method?Optionssuperthisextendsinstanceof

lect the correct answerWhich of these is supported by method overriding in Java?

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