package com.company;

class Phone{

    public void showTime(){

        System.out.println("Time is 8 am");

    }

    public void on(){

        System.out.println("Turning on Phone...");

    }

}

​

class SmartPhone extends Phone{

    public void music(){

        System.out.println("Playing music...");

    }

    public void on(){

        System.out.println("Turning on SmartPhone...");

    }

}

public class cwh_49_dynamic_method_dispatch {

    public static void main(String[] args) {

        // Phone obj = new Phone(); // Allowed

        // SmartPhone smobj = new SmartPhone(); // Allowed

        // obj.name();

​

        Phone obj = new SmartPhone(); // Yes it is allowed

        // SmartPhone obj2 = new Phone(); // Not allowed

​

        obj.showTime();

        obj.on();

        // obj.music(); Not Allowed

​

​

    }

}

class Animal {

    void sound() {

        System.out.println("Animal makes a sound");

    }

}

​

class Dog extends Animal {

    void sound() {

        System.out.println("Dog barks");

    }

}

​

class Cat extends Animal {

    void sound() {

        System.out.println("Cat meows");

    }

}

​

public class Main {

    public static void main(String[] args) {

        Animal animal1 = new Dog(); // Reference of type Animal, object of type Dog

        Animal animal2 = new Cat(); // Reference of type Animal, object of type Cat

        animal1.sound(); // Executes Dog's implementation of sound()

        animal2.sound(); // Executes Cat's implementation of sound()

    }

}