public class Mammal {
    public void breathe() {
        System.out.println("Inhale and exhale");
    }
}

public class Cat extends Mammal {
    public void speak() {
        System.out.println("Meow!");
    }
}

public class Exec {
    public static void main(String[] args) {
        Cat rani = new Cat();
        rani.breath();
        rani.speak();
    }
}