Page 180 - CTS - CSA TP - Volume 2

COMPUTER SOFTWARE APPLICATION - CITS

4 Output:

In this example, Shape is an abstract class with an abstract method calculateArea(). Concrete classes
(Circle and Rectangle) extend Shape and provide their implementations for the calculateArea() method. The
AbstractClassExample class demonstrates creating instances of concrete classes and calling both abstract and
concrete methods

TASK 2: Abstract Class with Multiple Abstract Methods
// Abstract class
abstract class Animal {
// Abstract methods
public abstract void makeSound();
public abstract void eat();

// Concrete method
public void sleep() {
System.out.println(“Zzz... (Animal is sleeping)”);
}

}
// Concrete class 1
class Dog extends Animal {
// Implementing abstract methods
@Override

public void makeSound() {
System.out.println(“Woof! Woof!”);
}
@Override

public void eat() {
System.out.println(“Dog is eating”);
}
}

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CITS : IT & ITES - Computer Software Application - Exercise 110 CITS : IT & ITES - Computer Software Application - Exercise 110