AdminPanel.java

import java.util.Scanner;

public class AdminPanel {
    public static void start(Bank bank){
        Scanner scanner = new Scanner(System.in);

        while(true){
            System.out.println("---------------------");
            System.out.println("1. Create Account");
            System.out.println("2. Deposit");
            System.out.println("3. Withdraw");
            System.out.println("4. Check Balance");
            System.out.println("5. View All Accounts");
            System.out.println("6. Exit");
            System.out.println("---------------------");
            System.out.println();

            System.out.print("Enter your choice: ");
            int choice = scanner.nextInt();

            switch(choice){
                case 1:
                    System.out.print("Enter Account Number: ");
                    int accountNumber = scanner.nextInt();
                    scanner.nextLine();
                    System.out.print("Enter Holder's Name: ");
                    String name = scanner.nextLine();
                    System.out.print("Enter pin: ");
                    int pin = scanner.nextInt();

                    bank.createAccount(new Account(accountNumber, name, pin));
                    break;
                case 2:
                    System.out.print("Enter account number: ");
                    int accNumber = scanner.nextInt();
                    System.out.print("Enter amount: ");
                    double amount = scanner.nextDouble();

                    bank.depositToAccount(accNumber, amount);
                    break;
                case 3:
                    System.out.print("Enter account number: ");
                    int accNo = scanner.nextInt();
                    System.out.print("Enter amount: ");
                    double am = scanner.nextDouble();

                    bank.withdrawFromAccount(accNo, am);
                    break;
                case 4:
                    System.out.print("Enter account number: ");
                    int accN = scanner.nextInt();

                    Account acc = bank.findAccount(accN);
                    if(acc == null){
                        System.out.println("Account not found!");
                        break;
                    }

                    acc.display();
                    break;
                case 5:
                    bank.displayAllAccounts();
                    break;
                case 6:
                    System.out.println("Exiting...");
                    return;
                default:
                    System.out.println("Invalid Choice!");
            }
        }
    }    
}