BlueJ Lab — Inheritance

Java Code

class Animal {
    void sound() { System.out.println("Animal makes sound"); }
}
class Dog extends Animal {
    void sound() { System.out.println("Dog barks"); }
}
public class Main {
    public static void main(String[] args) {
        Dog d = new Dog();
        d.sound();
    }
}

Program Input (optional) Output