What is method overriding?

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Method overriding is a concept in object-oriented programming where a subclass provides a specific implementation of a method that is already defined in its superclass. This allows the subclass to modify or extend the behavior of that method based on its own needs. Overriding is a key feature that enables runtime polymorphism, allowing the correct version of a method to be called based on the object’s actual type at runtime.

To override a method:

• The method in the subclass must have the same name, return type, and parameters as the one in the superclass.

• The access level of the overriding method must be the same or more accessible.

• It is generally used for instance methods, not for static, final, or private methods.

The Dog class overrides the sound() method of the Animal class. When the sound() method is called on a Dog object, the overridden method is executed, not the one from Animal.

Advantages:

• Supports dynamic (runtime) polymorphism.

• Allows subclass-specific behavior.

• Enhances code flexibility and reusability.

Method overriding is a powerful technique that helps implement specific behaviors in subclasses while preserving a consistent interface across a class hierarchy.

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