No, you cannot change the scope of an overridden method in a subclass in Java.
The scope of a method is determined by its access modifier. When you override a method in a subclass, you are essentially providing a new implementation for the same method signature. This signature includes the method name, return type, and parameter list, but not the access modifier.
Here's why:
- Method overriding aims to provide a specialized implementation of an inherited method. Changing the scope would alter the visibility of the method, potentially breaking existing code that relies on the original method's access level.
- Java enforces strict rules for method overriding. The overriding method must have the same signature as the overridden method. Changing the scope would violate this rule.
Example:
Let's say you have a base class Animal
with a public
method makeSound()
.
public class Animal {
public void makeSound() {
System.out.println("Generic animal sound");
}
}
If you create a subclass Dog
that overrides makeSound()
, you cannot change its scope to protected
or private
.
public class Dog extends Animal {
// This is illegal!
// protected void makeSound() {
// System.out.println("Woof!");
// }
}
In summary, the scope of an overridden method in Java must remain the same as the overridden method in the superclass. You can only change the implementation of the method.