Page 202 - CTS - CSA TP - Volume 2

COMPUTER SOFTWARE APPLICATION - CITS

• Run the program:

Output:

This example demonstrates how to use multiple classes in a package, keeping related functionality organized.
Related Exersises
1 Create and use virtual methods.

• Question: Create a base class Shape with a virtual method calculateArea(). Create derived classes Circle
and Rectangle implementing this method to calculate the area of a circle and rectangle, respectively.
2 Create abstract classes and methods.

• Question: Define an abstract class Bank with an abstract method calculateInterest(). Create subclasses
SavingsAccount and FixedDeposit to implement this method for calculating interest.
3 Create interfaces in JAVA.

• Question: Define an interface Drawable with a method draw(). Create classes Circle and Square
implementing this interface to provide their own implementations of drawing.
4 Override methods in JAVA.
• Question: Create a base class Animal with a method makeSound(). Create subclasses Dog and Cat that
override this method to make different sounds.
5 Create and implement an interface.
• Question: Define an interface Resizable with a method resize(int percentage). Implement this interface in
a class ResizableRectangle that adjusts its dimensions based on the percentage.
6 Extend interfaces in JAVA.
• Question: Create an interface AdvancedDrawable extending the Drawable interface with a method rotate().
Implement this interface in a class RotatableSquare.
7 Create and use a package in JAVA.
• Question: Create a package named utilities and include a class Calculator with methods for addition,
subtraction, multiplication, and division. Use this package in a Main class to perform basic arithmetic
operations.

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CITS : IT & ITES - Computer Software Application - Exercise 115 CITS : IT & ITES - Computer Software Application - Exercise 115