Main.java

package Main;
import java.util.Scanner;
import service.UserService;
import Model.User;
import service.WalletService;
import util.DataStore;
import Model.transaction;


public class Main {
    public static void main(String[]args){
        Scanner sc = new Scanner(System.in);
        UserService userService = new UserService();
        WalletService walletservice = new WalletService();
        while(true){
    System.out.println("1. Create User ");
    System.out.println("2. Add Money ");
    System.out.println("3. View Balance ");
    System.out.println("4. Send Money ");
    System.out.println("5. view Transaction ");
    System.out.println("6. Exit ");
    System.out.println("Select an   Option : (1,2,3,4) ");
    
        int input = sc.nextInt(); 
    switch (input) {
        case 1:
            System.out.println("Name : ");
            String name = sc.next();
            System.out.println("Mobile No. : ");
            String Mobile = sc.next();
            System.out.println("Pin : ");
            int Pin = sc.nextInt();
            userService.createUser(name,Mobile,Pin);
            break;

        case 2:
        System.out.println("Enter ur Mobile No. : ");
        String mobile = sc.next();
        User u = userService.getUser(mobile);
        if (u==null){
            break;
        }
        else{
            System.out.println("enter Amount : ");
            double amount = sc.nextDouble();
            u.getWallet().addMoney(amount);
            System.out.println("Amount Credited Successfully");
        }
            break;

        case 3:
         System.out.println("Mobile : ");
         String mobile1 = sc.next();
         User u1 = userService.getUser(mobile1);
         if(u1==null){
            break;
         }
         System.out.println("Balance: " + u1.getWallet().getBalance());
            break;
            
        case 4:
            System.out.println("Enter from Mobile No. : ");
            String FromMobile = sc.next();
            System.out.println("Enter to Mobile No. : ");
            String toMobile = sc.next();
            System.out.println("Amount : ");
            double amount = sc.nextDouble();
            System.out.print("Enter PIN: ");
            int pin = sc.nextInt();

            walletservice.sendMoney(FromMobile,toMobile,amount,pin);
            break;

        case 5:
            if(DataStore.transactions.isEmpty()){
                System.out.println("No Transactions Done Yet");
            }
            else{
                for(transaction t:DataStore.transactions){
                  System.out.println(t);
                }
            }
            break;

        case 6:
            System.out.println("Thank you for using UPI Wallet!");
                    System.exit(0);

        default:
            System.out.println("Invalid choice!");
    }

    }
}
}