Page 126 - CTS - CSA TP - Volume 2

COMPUTER SOFTWARE APPLICATION - CITS

}
}
Output:

Explanation:
• In this program, we define a class Circle with an attribute radius.

• We provide a default constructor for the Circle class, which initializes the radius attribute to a default value (1.0
in this case).
• In the main method, we create an instance of the Circle class using the default constructor.
• We call the calculateArea method of the Circle class to calculate and display the area of the circle.

TASK 3: Default Constructor in a Bank Account Class
// Bank Account using default constructors

class BankAccount {
String accountNumber;
double balance;
// Default constructor

BankAccount() {
accountNumber = “0000000000”; // Default account number
balance = 0.0; // Initialize balance to zero
}
// Method to display account details
void displayAccountDetails() {

System.out.println(“Account Number: “ + accountNumber);
System.out.println(“Balance: “ + balance);
}
}

public class BankAccount_Demo {
public static void main(String[] args) {
// Creating an instance of BankAccount using the default constructor
BankAccount account = new BankAccount();

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CITS : IT & ITES - Computer Software Application - Exercise 97