import java.util.*;

public class Main {
    public static void main(String[] args) {
      System.out.println("Hello, World!");
  }
}
/*
ChatGPT 3.5

User
"* Developer needs to input the following information from the console using programming.
1- To Add the Customer - if option entered  is 1 , then  Get the customer attributes as mentioned below, create an object and  add it to array.
- Consumer ID:  An integer value 
- Bill Number: An integer value 
- Title: String value
- Customer Name: A string value for Customer name
- Email: A string value to capture the Email.
- Mobile number: 10 digit mobile number
- User ID: A random string for user ID with a default value
- Password: A string value for Password
- Confirm Password: A string value for confirm password
* Once all fields are taken as input, Customer details need to be inserted in array. After successful registration, a registration acknowledgment message need to be displayed on the console as ""Customer Registration is successful"". 
2- to Update the Customer details - if option entered  is 2 ,then get the email address and consumer id attribute and update the email address for the specific consumer id.
Once the Customer object is updated with new value , then an acknowledgment message need to be displayed on the console as ""Customer details are updated successfully""
3-To Delete the Customer – if option entered  is 3 ,consumer id is fetched and related customer is removed from the array.
Once the Customer object is identified and removed from the collection, then an acknowledgment message need to be displayed on the console as ""Customer details are deleted""
4.To Select Customers- – if option entered  is 4 ,fetch all the customers from the array and print it on the console 
For all the above operations create seperate methods with necessary parameters."


Write java code
ChatGPT
Sure, here's a Java code implementing the functionalities you described:

java
Copy code
import java.util.ArrayList;
import java.util.Scanner;

class Customer {
    private int consumerId;
    private int billNumber;
    private String title;
    private String customerName;
    private String email;
    private String mobileNumber;
    private String userId;
    private String password;

    // Constructor
    public Customer(int consumerId, int billNumber, String title, String customerName, String email, String mobileNumber, String userId, String password) {
        this.consumerId = consumerId;
        this.billNumber = billNumber;
        this.title = title;
        this.customerName = customerName;
        this.email = email;
        this.mobileNumber = mobileNumber;
        this.userId = userId;
        this.password = password;
    }

    // Getters and Setters
    public int getConsumerId() {
        return consumerId;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getEmail() {
        return email;
    }
}

public class Main {
    static ArrayList<Customer> customers = new ArrayList<>();
    static Scanner scanner = new Scanner(System.in);

    public static void main(String[] args) {
        while (true) {
            System.out.println("Choose an option:");
            System.out.println("1. Add Customer");
            System.out.println("2. Update Customer Details");
            System.out.println("3. Delete Customer");
            System.out.println("4. Select Customers");
            System.out.println("5. Exit");

            int option = scanner.nextInt();
            scanner.nextLine(); // Consume newline

            switch (option) {
                case 1:
                    addCustomer();
                    break;
                case 2:
                    updateCustomerDetails();
                    break;
                case 3:
                    deleteCustomer();
                    break;
                case 4:
                    selectCustomers();
                    break;
                case 5:
                    System.out.println("Exiting...");
                    return;
                default:
                    System.out.println("Invalid option. Please choose again.");
            }
        }
    }

    static void addCustomer() {
        System.out.println("Enter Consumer ID:");
        int consumerId = scanner.nextInt();
        scanner.nextLine(); // Consume newline

        System.out.println("Enter Bill Number:");
        int billNumber = scanner.nextInt();
        scanner.nextLine(); // Consume newline

        System.out.println("Enter Title:");
        String title = scanner.nextLine();

        System.out.println("Enter Customer Name:");
        String customerName = scanner.nextLine();

        System.out.println("Enter Email:");
        String email = scanner.nextLine();

        System.out.println("Enter Mobile Number:");
        String mobileNumber = scanner.nextLine();

        // Assuming a default value for User ID
        String userId = "defaultUserId";

        System.out.println("Enter Password:");
        String password = scanner.nextLine();

        System.out.println("Enter Confirm Password:");
        String confirmPassword = scanner.nextLine();

        // Check if password matches confirm password
        if (!password.equals(confirmPassword)) {
            System.out.println("Password and Confirm Password do not match. Customer registration failed.");
            return;
        }

        // Create Customer object and add to array
        Customer newCustomer = new Customer(consumerId, billNumber, title, customerName, email, mobileNumber, userId, password);
        customers.add(newCustomer);

        System.out.println("Customer Registration is successful.");
    }

    static void updateCustomerDetails() {
        System.out.println("Enter Consumer ID:");
        int consumerId = scanner.nextInt();
        scanner.nextLine(); // Consume newline

        System.out.println("Enter New Email:");
        String newEmail = scanner.nextLine();

        // Find customer by consumerId
        for (Customer customer : customers) {
            if (customer.getConsumerId() == consumerId) {
                // Update email
                customer.setEmail(newEmail);
                System.out.println("Customer details are updated successfully.");
                return;
            }
        }
        System.out.println("Customer with given Consumer ID not found.");
    }

    static void deleteCustomer() {
        System.out.println("Enter Consumer ID:");
        int consumerId = scanner.nextInt();
        scanner.nextLine(); // Consume newline

        // Find customer by consumerId
        for (Customer customer : customers) {
            if (customer.getConsumerId() == consumerId) {
                customers.remove(customer);
                System.out.println("Customer details are deleted.");
                return;
            }
        }
        System.out.println("Customer with given Consumer ID not found.");
    }

    static void selectCustomers() {
        System.out.println("Customers:");
        for (Customer customer : customers) {
            System.out.println(customer.getConsumerId() + ": " + customer.getEmail());
            // Print other customer details as needed
        }
    }
}
*/