q2

import java.util.ArrayList;
import java.util.Scanner;

class CustomerRegistration {
// Class to store customer details
static class Customer {
String name;
String email;
String countryCode;
String mobileNumber;
String address;
String userID;
String password;
String preferences;

    Customer(String name, String email, String countryCode, String mobileNumber, String address, String userID, String password, String preferences) {
        this.name = name;
        this.email = email;
        this.countryCode = countryCode;
        this.mobileNumber = mobileNumber;
        this.address = address;
        this.userID = userID;
        this.password = password;
        this.preferences = preferences;
    }
}

public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    ArrayList<Customer> customers = new ArrayList<>(); // To store registered customers

    System.out.println("Customer Registration:");
    // Input for Customer Name
    System.out.print("Enter Customer Name (Max 50 characters): ");
    String name = scanner.nextLine();
    if (name.length() > 50) {
        System.out.println("Name exceeds maximum character limit. Exiting...");
        return;
    }

    // Input for Email
    System.out.print("Enter Email: ");
    String email = scanner.nextLine();

    // Input for Mobile Number
    System.out.print("Enter Country Code (e.g., +1, +91): ");
    String countryCode = scanner.nextLine();
    System.out.print("Enter 10-digit Mobile Number: ");
    String mobileNumber = scanner.nextLine();
    if (mobileNumber.length() != 10 || !mobileNumber.matches("\\d+")) {
        System.out.println("Invalid mobile number. Exiting...");
        return;
    }

    // Input for Address
    System.out.print("Enter Address (including ZIP code and Parcel code): ");
    String address = scanner.nextLine();

    // Input for User ID
    System.out.print("Enter User ID (5-20 characters): ");
    String userID = scanner.nextLine();
    if (userID.length() < 5 || userID.length() > 20) {
        System.out.println("User ID does not meet length requirements. Exiting...");
        return;
    }

    // Input for Password and Confirmation
    System.out.print("Enter Password (Max 30 characters): ");
    String password = scanner.nextLine();
    if (password.length() > 30) {
        System.out.println("Password exceeds maximum character limit. Exiting...");
        return;
    }
    System.out.print("Confirm Password: ");
    String confirmPassword = scanner.nextLine();
    if (!password.equals(confirmPassword)) {
        System.out.println("Passwords do not match. Exiting...");
        return;
    }

    // Input for Preferences
    System.out.print("Enter Preferences (e.g., mail delivery, notifications): ");
    String preferences = scanner.nextLine();

    // Add customer to the list
    customers.add(new Customer(name, email, countryCode, mobileNumber, address, userID, password, preferences));
    System.out.println("Customer registered successfully!");

    // Display all registered customers
    System.out.println("\nRegistered Customers:");
    for (Customer customer : customers) {
        System.out.println("Name: " + customer.name);
        System.out.println("Email: " + customer.email);
        System.out.println("Mobile: " + customer.countryCode + " " + customer.mobileNumber);
        System.out.println("Address: " + customer.address);
        System.out.println("User ID: " + customer.userID);
        System.out.println("Preferences: " + customer.preferences);
        System.out.println("--------------------------");
    }

    scanner.close();
}

}