In Java, can we declare main() method as final?

Yes, we can declare the main() method as final in Java. The compiler won't throw any errors.

• If we declare any method as final by placing final keyword, then that method will become Final method .
• The main purpose of final methods in Java is that they cannot be overridden.
• We cannot override final methods in subclasses.
• If we use inheritance and need some methods not to be overridden in subclasses, then we need to make them final so that these methods cannot be overridden by subclasses.
• We can access the ffinal method in the subclass, but we cannot override the final method.

Example

class BaseClass {
   public final void show(Object o) {
      System.out.println("BaseClass method");
   }
}
class DerivedClass extends BaseClass {
   public void show(Integer i) {
      System.out.println("DerivedClass method");
   }
}
public class Test {
   public static final void main(String[] args) { // declaring main () method with final keyword.
      BaseClass b = new BaseClass();
      DerivedClass d = new DerivedClass();
      b.show(new Integer(0));
      d.show(new Integer(0));
   }
}

Output

BaseClass method
DerivedClass method

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