// Parent class
class Animal {
  String name;

  public void eat() {
    System.out.println(name + " is eating.");
  }
}

// Child class inherits from Animal
class Dog extends Animal {
  public void bark() {
    System.out.println(name + " says woof!");
  }
}

public class Main {
  public static void main(String[] args) {
    Dog d = new Dog();
    d.name = "Rex";
    d.eat();  // inherited from Animal
    d.bark(); // defined in Dog
  }
}