In a banking application, consider a class “
BankAccount” with attributes like accountNumber, balance, and methods like
deposit() and
withdraw(). To ensure data encapsulation and prevent unauthorized access or modification of sensitive data (e.g., balance), we should use private access modifiers for the attributes. This restricts their direct access to only within the BankAccount class, unlike protected or public which would allow access from subclasses or any other classes respectively.
For example :
class BankAccount {
private int accountNumber;
private double balance;
public void deposit(double amount) {
// Deposit logic
}
public void withdraw(double amount) {
// Withdrawal logic
}
}?
By using private access modifiers, we can enforce proper usage through public methods (deposit and withdraw) that contain necessary validation and business logic, ensuring the integrity and security of our banking application.
