Can we use final with main method?

The short answer is Yes. You can declare main method as final.

How does the keyword final affect a method in Java?

Java final keyword is a non-access specifier that is used to restrict a class, variable, and method. If we declare a method as final, then it cannot be overridden by any subclasses. And, if we declare a class as final, we restrict the other classes to inherit or extend it.

Where we can use final keyword in Java?

In Java, the final keyword can be used while declaring an entity. Using the final keyword means that the value can’t be modified in the future. This entity can be – but is not limited to – a variable, a class or a method.

Can we use final keyword with string?

final : In Java, final is a modifier which is used for class, method and variable also. When a variable is declared with final keyword, it’s value can’t be modified, essentially, a constant. In Java, we know that String objects are immutable means we cant change anything to the existing String objects.

Can we declare main method as private?

Yes, we can declare the main method as private in Java. It compiles successfully without any errors but at the runtime, it says that the main method is not public.

Does final keyword increase performance?

When we apply the final keyword to a class, then that class cannot be subclassed. When we apply it to a method, then that method cannot be overridden. There are no reported performance benefits of applying final to classes and methods.

Can we overload final method in Java?

private and final methods can be overloaded but they cannot be overridden. It means a class can have more than one private/final methods of same name but a child class cannot override the private/final methods of their base class. Argument list should be different while doing method overloading.

Can we modify final variable in Java?

Final variable in Java cannot be changed. Once if we have assigned the final variable it can not be changed it is fixed. but if you have declare a blank final variable then you can assign value to it only in constructor.

What is the purpose of the final keyword in Java?

It is a keyword that can be used with entities in Java to restrict their use. We can use it with class, methods, variables. There are different uses of the Java final keyword for different entities. That is, the purpose of using the final keyword is different for class, variable, and method.

Can We declare the main() method as final in Java?

Can we declare the main () method as final in Java? 1 If we declare any method as final by placing the final keyword then that method becomes the final method. 2 The main use of the final method in Java is they are not overridden. 3 We can not override final methods in subclasses.

What is a final variable in Java?

final is a reserved keyword in Java to restrict the user and it can be applied to member variables, methods, class and local variables. Final variables are often declared with the static keyword in Java and are treated as constants. For example: public static final String hello = “Hello”;

Can We extend a final method in Java?

If you make any method as final, you cannot override it. If you make any class as final, you cannot extend it. Q) Is final method inherited? Ans) Yes, final method is inherited but you cannot override it.