Explain the concept of method overriding and provide an example.

Method overriding occurs when a subclass provides a specific implementation for a method that is already defined in its superclass. For instance:

class Animal {
    void sound() {
        System.out.println("Animal makes a sound");
    }
}

class Dog extends Animal {
    void sound() {
        System.out.println("Dog barks");
    }
}