Real Time Java Program Using if and else if and Switch case

public class RealtimeSwitchcase {

public static void main(String[] args) {
     Scanner scanner = new Scanner(System.in);

        // Display menu
        System.out.println("Welcome to ChatGPT Café!");
        System.out.println("1. Idli - ₹30");
        System.out.println("2. Dosa - ₹50");
        System.out.println("3. Pongal - ₹40");
        System.out.println("4. Exit");
        System.out.print("Please enter your choice (1-4): ");

        int choice = scanner.nextInt();

        switch (choice) {
            case 1:
                System.out.println("You ordered Idli. Please pay ₹30.");
                break;

            case 2:
                System.out.println("You ordered Dosa. Please pay ₹50.");
                break;

            case 3:
                System.out.println("You ordered Pongal. Please pay ₹40.");
                break;

            case 4:
                System.out.println("Thank you! Visit again.");
                break;

            default:
                System.out.println("Invalid choice. Please select a valid option.");
        }

        scanner.close();
    }
}

Using if and else if

public static void main(String[] args) {

            Scanner scanner = new Scanner(System.in);// take input from the user at runtime

            // Display menu
            System.out.println("Welcome to Simple Bank");
            System.out.println("1. Check Balance");
            System.out.println("2. Deposit Money");
            System.out.println("3. Withdraw Money");
            System.out.println("4. Exit");
            System.out.print("Please select an option (1-4): ");

            int option = scanner.nextInt();
            double balance = 1000.00; // Starting balance

            if (option == 1) {
                System.out.println("Your current balance is: ₹" + balance);
            } else if (option == 2) {
                System.out.print("Enter amount to deposit: ₹");
                double deposit = scanner.nextDouble();
                balance += deposit;
                System.out.println("Amount deposited successfully. New balance: ₹" + balance);
            } else if (option == 3) {
                System.out.print("Enter amount to withdraw: ₹");
                double withdraw = scanner.nextDouble();
                if (withdraw <= balance) {
                    balance -= withdraw;
                    System.out.println("Amount withdrawn successfully. New balance: ₹" + balance);
                } else {
                    System.out.println("Insufficient balance.");
                }
            } else if (option == 4) {
                System.out.println("Thank you for banking with us!");
            } else {
                System.out.println("Invalid option. Please try again.");
            }

            scanner.close();
        }

}