BankingSystem.java

import java.util.Scanner; 
 
class BankAccount { 
    private String accountHolder; 
    private double balance; 
 
    // Constructor to initialize account with account holder's name 
    public BankAccount(String accountHolder) { 
        this.accountHolder = accountHolder; 
        this.balance = 0.0; // Initial balance set to zero 
    } 
 
    // Constructor to initialize account with account holder's name and initial deposit 
    public BankAccount(String accountHolder, double initialDeposit) { 
        this.accountHolder = accountHolder; 
        this.balance = initialDeposit; // Set the initial balance 
    } 
 
    // Method to check balance 
    public double checkBalance() { 
        return balance; 
    } 
 
    // Method to deposit money 
    public void deposit(double amount) { 
        if (amount > 0) { 
            balance += amount; 
            System.out.println("Deposited: $" + amount); 
        } else { 
            System.out.println("Deposit amount must be positive."); 
        } 
    } 
 
    // Method to withdraw money 
    public void withdraw(double amount) { 
        if (amount > 0 && amount <= balance) { 
            balance -= amount; 
            System.out.println("Withdrawn: $" + amount); 
        } else { 
            System.out.println("Insufficient funds or invalid amount."); 
        } 
    } 
 
    // Method to display account information 
    public void displayAccountInfo() { 
        System.out.println("Account Holder: " + accountHolder); 
        System.out.println("Current Balance: $" + balance); 
    } 
} 
 
public class BankingSystem { 
    public static void main(String[] args) { 
        Scanner scanner = new Scanner(System.in); 
 
        // Create a bank account with the account holder's name 
        System.out.print("Enter account holder's name: "); 
        String name = scanner.nextLine(); 
        BankAccount account = new BankAccount(name); 
 
        // Menu for banking operations 
        int choice; 
        do { 
            System.out.println("\n--- Banking System ---"); 
            System.out.println("1. Check Balance"); 
            System.out.println("2. Deposit Money"); 
            System.out.println("3. Withdraw Money"); 
            System.out.println("4. Display Account Info"); 
            System.out.println("5. Exit"); 
            System.out.print("Enter your choice: "); 
            choice = scanner.nextInt(); 
 
            switch (choice) { 
                case 1: 
                    System.out.println("Current Balance: $" + account.checkBalance()); 
                    break; 
                case 2: 
                    System.out.print("Enter amount to deposit: $"); 
                    double depositAmount = scanner.nextDouble(); 
                    account.deposit(depositAmount); 
                    break; 
                case 3: 
                    System.out.print("Enter amount to withdraw: $"); 
                    double withdrawAmount = scanner.nextDouble(); 
                    account.withdraw(withdrawAmount); 
                    break; 
                case 4: 
                    account.displayAccountInfo(); 
                    break; 
                case 5: 
                    System.out.println("Exiting..."); 
                    break; 
                default: 
                    System.out.println("Invalid choice. Please try again."); 
            } 
        } while (choice != 5); 
 
        scanner.close(); 
    } 
}