OBJECT-ORIENTED PROGRAMMING

interface Animal {
    void speak();
}

class Dog implements Animal {
    private String name;
    
    public Dog(String name) {
        this.name = name;
    }
    
    @Override
    public void speak() {
        System.out.println(name + " says Woof!");
    }
}

public class Main {
    public static void main(String[] args) {
        Animal dog = new Dog("Buddy");
        dog.speak(); // Buddy says Woof!
    }
}