1
.
Write a Java program to create a base class Animal
(
Animal Family
)
with a method called Sound
(
)
.
Create two subclasses Bird and Cat. Override the Sound
(
)
method in each subclass to make a specific sound for each animal.

Question

﻿
1
.
 ﻿Write a Java program to create a base class Animal 
(
Animal Family
)
 ﻿with a method called Sound
(
)
.
 ﻿Create two subclasses Bird and Cat. Override the Sound
(
)
 ﻿method in each subclass to make a specific sound for each animal.

Accepted Answer

```java // Define the base class Animal class Animal { // Define a method called Sound public void Sound() { // Print a generic sound System.out.println("Animal makes a sound"); } } // Define the subclass Bird that extends Animal class Bird extends Animal { // Override the Sound method for Bird @Override public void Sound() { // Print the sound a bird makes System.out.println("Bird chirps"); } } // Define the subclass Cat that extends Animal class Cat extends Animal { // Override the Sound method for Cat @Override public void Sound() { // Print the sound a cat makes System.out.println("Cat meows"); } } ``` ```java // Main class to test the Sound method of Animal, Bird, and Cat public class Main { public static void main(String[] args) { // Create an instance of Bird Bird bird = new Bird(); // Call the Sound method on Bird instance bird.Sound(); // Should print "Bird chirps" // Create an instance of Cat Cat cat = new Cat(); // Call the Sound method on Cat instance cat.Sound(); // Should print "Cat meows" } } ``` ∻Explanation∻ ⚹The code defines a base class Animal with a method Sound. Two subclasses, Bird and Cat, are created, each overriding the Sound method to produce a specific sound. The main class tests the functionality of these methods.⚹ ∻Step-by-step Instruction∻ ‖ ▪ ⋮ Define the base class Animal with a method Sound that prints a generic sound. ‖ ‖ ▪ ⋮ Create subclass Bird that extends Animal and override the Sound method to print "Bird chirps". ‖ ‖ ▪ ⋮ Create subclass Cat that extends Animal and override the Sound method to print "Cat meows". ‖ ‖ ▪ ⋮ In the main class, create instances of Bird and Cat and call their Sound method to test the overridden methods. ‖ ∻Time Complexity∻ ⚹The time complexity for calling the Sound method is O(1) because it executes in constant time regardless of any input.⚹ ∻Space Complexity∻ ⚹The space complexity is O(1) as well, since the method does not use any additional space that grows with input size.⚹

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