java doel atm

import java.util.Scanner;

public class atmdoel {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.println("     =========================================================");
        System.out.println("     |              SELAMAT DATANG DI ATM BANK IBN           |");
        System.out.println("     =========================================================");
        login();
    }
    public static void  login(){
        Scanner in = new Scanner(System.in);
        System.out.print("Masukkan username : ");
        String username = in.nextLine();
        System.out.print("Masukkan password : ");
        int pin = in.nextInt();
        int saldo;
        switch (username) {
            case "Okza":
                if (pin == 123456) {
                    saldo = 500000;
                    menu(username, saldo);
                } else {
                    System.out.println("Username/Password yang Anda masukkan salah.");
                }
                break;
            case "Farhan":
                if (pin == 234567) {
                    saldo = 2000000;
                    menu(username, saldo);
                } else {
                    System.out.println("Username/Password yang Anda masukkan salah.");
                }
                break;
            case "Syarief":
                if (pin == 345678) {
                    saldo = 1500000;
                    menu(username, saldo);
                } else {
                    System.out.println("Username/Password yang Anda masukkan salah.");
                }
                break;
            case "Titus":
                if (pin == 456789) {
                    saldo = 700000;
                    menu(username, saldo);
                } else {
                    System.out.println("Username/Password yang Anda masukkan salah.");
                }
                break;
            case "Darell":
                if (pin == 567890) {
                    saldo = 100000000;
                    menu(username, saldo);
                } else {
                    System.out.println("Username/Password yang Anda masukkan salah.");
                }
                break;
            default:
                System.out.println("Username/Password yang Anda masukkan salah");
        }
    }
    public static  void menu(String user,int saldo){
        Scanner in = new Scanner(System.in);
        int pilihan;
        do {
            System.out.println("=============================================================");
            System.out.println("|");
            System.out.print("\tSELAMAT DATANG DI ATM BANK IBN  |");
            System.out.println();
            System.out.println("=============================================================");
            System.out.println("|");
            System.out.print("\t           >pilih transaksi<                        |");
            System.out.println();
            System.out.print("|");
            System.out.print("\t[1] Daftar Rekening                                 |");
            System.out.println();
            System.out.print("|");
            System.out.println("\t[2] masuk                                         |");
            System.out.println();
            System.out.print("|");
            System.out.println("\t[3] keluar                                        |");
            System.out.println("============================================================");
            System.out.print("\t       masukan pilihan anda : ");
            pilihan = in.nextInt();
            if (pilihan == 1){
                System.out.println(" ");
                String[][] nasabah = {{"Username", "Bank\t", "No.Rekening"},
                        {"Okza\t", "ABC\t", "00000000"},
                        {"Farhan\t", "ABC\t", "00000001"},
                        {"Syarief\t", "Diriman\t", "11111110"},
                        {"Titus\t", "IBN\t", "22222202"},
                        {"Darell\t", "IRB\t", "33333033"}};
                for (int i = 0; i < nasabah.length; i++) {
                    for (int j = 0; j < nasabah[i].length; j++) {
                        System.out.print(nasabah[i][j] + "\t");
                    }
                    System.out.println(" ");
                }
                System.out.println(" ");
            }
            if (pilihan == 2) {
                masuk(user, saldo);
            }
        } while (pilihan == 1 || pilihan == 2);
        switch (pilihan){
            case 3 :
                System.out.println("====================================================");
                System.out.println("\tTerima kasih telah menggunakan layanan kami ");
                System.out.println("\t     silahkan ambil kartu anda.");
                break;
            default:
                System.out.println("pilihan yang anda masukkan salah. silahkan logkn kembali.");

                login();
                break;
        }
            }
            public static void  masuk (String username, int saldo){
        Scanner in = new Scanner(System.in);
        int pilihan;
                System.out.println("====================================================");
                System.out.println("                       MENU");
                System.out.println(" 1. Informasi Saldo            2. Penarikan Tunai ");
                System.out.println(" 3. Transfer                         4. Ganti PIN ");
                System.out.println(" 5. Keluar");
                System.out.println(" ");
                System.out.print("Pilihan Anda : ");
                pilihan = in.nextInt();
                switch (pilihan) {
                    case 1:
                        saldo(username, saldo);
                        break;
                    case 2:
                        tarik(username, saldo);
                        break;
                    case 3:
                        transfer(username, saldo);
                    case 5:
                        System.out.println("            Silahkan mengambil kartu Anda");
                        System.out.println("        Terimakasih telah menggunakan jasa kami");
                        System.out.println("");
                        System.exit(0);
                        break;
                }
            }
            public static void saldo(String user, int saldo){
                System.out.println("====================================================");
                switch (user) {
                    case "Okza":
                    case "Farhan":
                    case "Syarief":
                    case "Titus":
                    case "Darell":
                        System.out.println("");
                        System.out.println("               Halo " + user + "!");
                        System.out.println("              Saldo Anda Rp" + saldo);
                        System.out.println("");
                        break;
                }
                masuk(user, saldo);
            }
            public static void  tarik(String user, int saldo) {
                Scanner in = new Scanner(System.in);
                int minimal = 50000;
                int pilihan;
                int nominal;
                System.out.println("=======================================================");
                System.out.print("|");
                System.out.print("\t                   Penarikan Tunai                   |" + "                |");
                System.out.println();
                System.out.println("=======================================================");
                System.out.println("      MASUKKAN NOMINAL YANG INGIN ANDA TARIK TUNAI");
                nominal = in.nextInt();
                System.out.println(" ");
                switch (user) {
                    case "Okza":
                    case "Farhan":
                    case "Syarief":
                    case "Titus":
                    case "Darell":
                        if (saldo - nominal >= 50000) {
                            saldo = saldo - nominal;
                            System.out.println("       Transaksi berhasil dilakukan!");
                            System.out.println("Silahkan mengambil uang Anda di bagian bawah monitor.");
                            masuk(user, saldo);
                        } else {
                            System.out.println("                  MAAF!");
                            System.out.println("       Transaksi tidak dapat dilakukan");
                            System.out.println("     karena melebihi batas maksimal nominal");
                            System.out.println(" ");
                            System.out.println("       Lanjutkan transaksi? (ya/tidak)");
                            System.out.println("1. Ya ");
                            System.out.println("2. Tidak");
                            System.out.print("Pilihan Anda : ");
                            pilihan = in.nextInt();
                            if (pilihan == 1) {
                                tarik(user, saldo);
                            } else {
                                masuk(user, saldo);
                            }
                        }
                }
            }
    public static void transfer(String user, int saldo) {
        Scanner in = new Scanner(System.in);
        int pilihan, pin;
        String tujuan;
        System.out.println("====================================================");
        System.out.println("TRANSFER KE");
        System.out.println(" 1. Sesama Bank");
        System.out.println(" 2. Selain Bank");
        System.out.println(" 3. Kembali");
        System.out.println(" ");
        System.out.print("Pilihan Anda +=========> ");
        pilihan = in.nextInt();
        if (pilihan == 1) {
            switch (user) {
                case "Okza":
                    System.out.println("====================================================");
                    System.out.println(" ");
                    in.nextLine();
                    System.out.print("Masukkan nomer rekening tujuan : ");
                    pin = in.nextInt();
                    System.out.println(" ");
                    if (pin == 00000001) {
                        jika(user, saldo);
                    } else {
                        tidak(user, saldo);
                    }
                case "Farhan":
                    System.out.println("====================================================");
                    System.out.println(" ");
                    in.nextLine();
                    System.out.print("Masukkan nomer rekening tujuan : ");
                    pin = in.nextInt();
                    System.out.println(" ");
                    if (pin == 00000000) {
                        jika(user, saldo);
                    } else {
                        tidak(user, saldo);
                    }
                case "Syarief":
                case "Titus":
                case "Darell":
                    System.out.println("====================================================");
                    System.out.println("     Maaf Anda tidak dapat melakukan transaksi");
                    System.out.println("      Karena tidak ada nasabah yang terdaftar ");
                    System.out.println("         dengan bank yang sama seperti Anda.");
                    System.out.println(" ");
                    System.out.println("          Lanjutkan transaksi? (ya/tidak)");
                    System.out.println(" 1. Ya");
                    System.out.println(" 2. Tidak");
                    System.out.println(" ");
                    System.out.print("Pilihan Anda : ");
                    pilihan = in.nextInt();
                    if (pilihan == 1) {
                        transfer(user, saldo);
                    } else {
                        masuk(user, saldo);
                    }

            }
        } else if (pilihan == 2) {
            System.out.println("====================================================");
            System.out.println(" ");
            in.nextLine();
            System.out.print("Masukkan no. rekening tujuan : ");
            pin = in.nextInt();
            System.out.println(" ");
            switch (user) {
                case "Okza":
                    if (pin == 11111110 || pin == 22222202 || pin == 33333033) {
                        jika(user, saldo);
                    } else if (pin == 00000001) {
                        tidakSama(user, saldo);
                    } else {
                        tidak(user, saldo);
                    }
                case "Farhan":
                    if (pin == 11111110 || pin == 22222202 || pin == 33333033) {
                        jika(user, saldo);
                    } else if (pin == 00000000) {
                        tidakSama(user, saldo);
                    } else {
                        tidak(user, saldo);
                    }
                case "Syarief":
                    if (pin == 00000000 || pin == 22222202 || pin == 33333033
                            || pin == 00000001) {
                        jika(user, saldo);
                    } else {
                        tidak(user, saldo);
                    }
                case "Titus":
                    if (pin == 11111110 || pin == 00000000 || pin == 33333033
                            || pin == 00000001) {
                        jika(user, saldo);
                    } else {
                        tidak(user, saldo);
                    }
                case "Darell":
                    if (pin == 11111110 || pin == 00000000 || pin == 22222202
                            || pin == 00000001) {
                        jika(user, saldo);
                    } else {
                        tidak(user, saldo);
                    }
            }
        } else if (pilihan == 3) {
            masuk(user, saldo);
        } else {
            System.out.println("Pilihan tidak terdaftar!");
            System.out.println("Anda akan  langsung dikembalikan ke menu utama");
            masuk(user, saldo);
        }
    }

    public static void jika(String user, int saldo) {
        Scanner in = new Scanner(System.in);
        int nominal, pilihan;
        System.out.println("Masukkan nominal yang akan ditransfer!");
        System.out.print("Nominal : ");
        nominal = in.nextInt();
        System.out.println(" ");
        if (saldo - nominal - 6500 >= 50000) {
            saldo = saldo - nominal - 6500;
            System.out.println("           Transaksi berhasil dilakukan!");
            System.out.println("                   Terimakasih!");
            System.out.println(" ");
            masuk(user, saldo);
        } else {
            System.out.println("                  MAAF!");
            System.out.println("       Transaksi tidak dapat dilakukan");
            System.out.println("     karena melebihi batas maksimal nominal");
            System.out.println("");
            System.out.println("       Lanjutkan transaksi? (ya/tidak)");
            System.out.println(" 1. Ya ");
            System.out.println(" 2. Tidak");
            System.out.print("Pilihan Anda : ");
            pilihan = in.nextInt();
            if (pilihan == 1) {
                transfer(user, saldo);
            } else {
                masuk(user, saldo);
            }
        }
    }
    public static void tidak(String user, int saldo) {
        Scanner in = new Scanner(System.in);
        int pilihan;
        System.out.println("                   MAAF!");
        System.out.println("    Nomer rekening yang Anda masukkan salah.");
        System.out.println(" ");
        System.out.println("       Lanjutkan transaksi? (ya/tidak)");
        System.out.println(" 1. Ya ");
        System.out.println(" 2. Tidak");
        System.out.print("Pilihan Anda : ");
        pilihan = in.nextInt();
        if (pilihan == 1) {
            transfer(user, saldo);
        } else {
            masuk(user, saldo);
        }
    }
    public static void tidakSama(String user, int saldo) {
        Scanner in = new Scanner(System.in);
        int pilihan;
        System.out.println("====================================================");
        System.out.println("     Maaf Anda tidak dapat melakukan transaksi");
        System.out.println("              Karena nasabah terdaftar");
        System.out.println("                dengan bank yang sama.");
        System.out.println(" ");
        System.out.println(" Silahkan memilih transaksi nomor 1 untuk melakukan");
        System.out.println("               transaksi sesama bank");
        System.out.println(" ");
        System.out.println("          Lanjutkan transaksi? (ya/tidak)");
        System.out.println(" 1. Ya ");
        System.out.println(" 2. Tidak");
        System.out.println(" ");
        System.out.print("Pilihan Anda : ");
        pilihan = in.nextInt();
        if (pilihan == 1) {
            transfer(user, saldo);
        } else {
            masuk(user, saldo);
        }
    }
}