Page 197 - CTS - CSA TP - Volume 2

COMPUTER SOFTWARE APPLICATION - CITS

TASK 2: Let’s explore another example that extends interfaces in Java:

// Base interface
interface Animal {
void eat(); // Abstract method
}

// Extended interface inheriting from Animal
interface Mammal extends Animal {
void giveBirth(); // Additional abstract method
}

// Class implementing the extended interface
class Dog implements Mammal {
@Override
public void eat() {
System.out.println(“Dog is eating”);

}

@Override
public void giveBirth() {

System.out.println(“Dog gives birth to puppies”);
}
}

// Main class

public class InterfaceExtensionExample2 {
public static void main(String[] args) {
Dog myDog = new Dog();
myDog.eat();

myDog.giveBirth();
}
}
Explanation:
1 Base Interface (Animal):
• Defines a base interface named Animal with a single abstract method eat.

2 Extended Interface (Mammal):
• Extends the Animal interface using the extends keyword.
• Introduces an additional abstract method giveBirth.

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CITS : IT & ITES - Computer Software Application - Exercise 114