[Dimlead]

I need help for this assignment I'm doing for school since I can't figure out how to do it. Also I tried to fix the problem over the internet by look up for answers but I can't find any answer for my specific problem since I have some specific guideline that I have to follow for this assignment, so I thought the best idea was to post it on a forum since I'm going to get answered specifically for my problem.

These are the following guidelines that I have to follow:

• You are required to write a program (java class) to create a system for a bank ATM machine.
  


• Hard code the users for the system. Each user will have a name, password, and balance and overdraft facility. (These must all be stored in arrays.)
  

• The user will be asked to log in to the ATM using a method which should return the position (index) of the user in the array.
  


• Once they log in they will have a Display Menu (method) with options to View Bank Statement (method), Change Password (method), Deposit Money (method), Withdraw Money (method) and Exit (method). The menu should loop until the user chooses to Exit. (The new password cannot be a password that is already in use.)
  


• The arrays must be updated when the user deposits or withdraws money or changes a password.
  


• The user can only withdraw more money than they have in their account if they have an overdraft facility.
  


• There is no limit on the overdraft.
  

• All inputs must be validated for error checking using a method.
  

Code

import java.util.Scanner;//java library class
public class Assigment2 {//start class

    //global variable
    static int creditsbalanceArray []={156,256,504};// user currency balance
   static String nameArray []={"Molly","Connor","Shane"};// user name
   static int passcodeArray []= {6543,7654,8765};// user passcode
   static int overdraftArray []={1,2,3};// user overdraft
   static int passcode;// user passcode
   static Scanner input = new Scanner(System.in);//static Scanner input
   static int index;// user index
    public static void main(String[] args) {//start main method

         showAllUsers();//show All user variable
       loginBankMachine();//login Bank Machine variable
       showAlternativeOptions();//show Alternative Options variable

   }//end main method

   //METHODOLOGY||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
   public static void showAllUsers(){//start showAllUsers method
        System.out.println("  All Users");// All Users
        System.out.println("INDEX\tNAME\t$ BAL\tPASSCODE");//user options
        for(int i=0;i<creditsbalanceArray.length;i++){//intializing credit balance Array
            System.out.println(i+"\t"+nameArray[i]+"\t"+creditsbalanceArray[i]+"\t"+passcodeArray[i]);//displaying arrays
        }// end for loop
   }//end showAllUsers method

   public static void loginBankMachine(){//start login method

        int[] accountPasscode;
        int[] d;
       int found = 0;
       System.out.println("Welcome " + d+"\nPlease Enter Passcode : ");
       int passcode = input.nextInt();

       //find the passcode in the array
       for (int i = 0;i <accountPasscode.length;i++){
           if (accountPasscode[i] == passcode ){
               found = 1;
               index = i;
               break;
           }//end if
       }//end for

       if (found == 0 ){
           System.out.println("Not found Try again");
           loginBankMachine();
       }//end if
   }//end loginATM

   public static void showAlternativeOptions(){//start ShowAlternativeOption Method
       System.out.println(" Please select one of the following options available");
        //give the user the menu
           System.out.print("\n1.View Bank Machine Produced Statment \n2.Deposit credits\n3.Withdraw credits\n4.Change Passcode\n5.Exit");//user options
           String option =input.next();//string option

           switch(option){//start switch method
               case "1":
                   BankMachineProducedStatement();break;//BankMachineProducedStatment option
               case "2":
                   System.out.println(" Deposit Credits");break;//Deposit Credits option
            case "3":
                System.out.println(" Withdraw Credits");break;//Withdraw Credits option
            case "4":
                System.out.println(" Change Passcode");break;//Change Passcode option
            case "5":
                System.out.println(" Thank you for using our bank machine");break;//Exit option
           }//end switch
   }// end ShowaAlternativeOption method

    public static void BankMachineProducedStatement(){//start BankMachineProducedStatement Method
        System.out.println(" Bank Machine Produced Statment");//Bank Machine Produced Statment Description
       System.out.println(index+"\t"+nameArray[index]+"\t"+creditsbalanceArray[index]+"\t"+passcodeArray[index]);//initalizing arrays
    }//end BankMachineProducedStatement method

    public static void DepositCredits(){//start DepositCredits Method
        System.out.println(" Credits Total");//Credits Total Description
        System.out.println(" Credit ");
        System.out.println(index+"\t"+creditsbalanceArray[index]);//initalizing arrays
    }//end DepositCredits method

    public static void WithdrawCredits(){//start WithdrawCredits Method
        System.out.println("Credits Withdrawn");//Credit Withdrawm Description
        System.out.println(index+"\t"+creditsbalanceArray[index]);//index creditsbalanceArray
    }//end WithdrawCredits method

    public static void changePasscode(){

    System.out.println("\nEnter new passcode");
        String stringpasscode=input.next();
        int passcodeArray=validateInput(passcode);
        for(int i=0;i<passcodeArray.length;i++){
            if (accountPasscode[i] == passcode){
                System.out.println("passcode taken");
                changePasscode();
            }//end if
        }//end for
    }//end changePasscode Method


    public static void Exit(){
        System.out.println("Thank you for using our bank machine");
        System.exit(0);
        }//end Exit method
       }
}//end class

This is the code that I have so far, the variables I used are different since I can't use the same variables as my class mates, so they're a bit odd. I still have to do the withdraw method, the passcode change method, the login method, the deposit method, loop, and errorcheck and I think that's it, if there's anything else that I missed that is in the guidelines then please correct me in the thread and give me a solution for it please. I tried solving the methods myself by putting in solutions from the internet but they don't match the guidelines and variables that I have, which causes problems that I can't fix, hopefully someone is able to fully help me so I can finish this frustrating assignment that has only cost me time and trouble.

[matt]

-snip-

Are you willing to pay somebody to do the assignment for you?

[Dimlead]

Are you willing to pay somebody to do the assignment for you?

Lool if I were to pay someone I would have just paid one of my nerdy class mates to do it for me, and wouldn't go through the trouble of putting up a thread.

[Ozgin]

It is pretty much done, you would just need to do the errorCheck method

Code

import java.util.Scanner;//java library class
import java.util.List;
import java.util.Arrays;

public class Assignment2 {//start class

    //global variable
    private static int creditsbalanceArray []={156,256,504};// user currency balance
    private static String nameArray []={"Molly","Connor","Shane"};// user name
    private static String passcodeArray []= {"6543","7654","8765"};// user passcode
    private static int overdraftArray []={1,2,3};// user overdraft
    private static int passcode;// user passcode
    private static Scanner input = new Scanner(System.in);//static Scanner input
    private static int index;// user index
    
    public static void main(String[] args) {//start main method
      showAllUsers();//show All user variable

      int userIndex = loginBankMachine();//login Bank Machine variable
      while(userIndex == -1){
        System.out.println("Something went wrong let's try that again");
        userIndex = loginBankMachine();
      }

      showMenu();//show Alternative Options variable
   }//end main method

   //METHODOLOGY||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
   public static void showAllUsers(){//start showAllUsers method
        System.out.println("  All Users");// All Users
        System.out.println("INDEX\tNAME\t$ BAL\tPASSCODE");//user options
        for(int i=0;i<creditsbalanceArray.length;i++){//intializing credit balance Array
            System.out.println(i+"\t"+nameArray[i]+"\t"+creditsbalanceArray[i]+"\t"+passcodeArray[i]);//displaying arrays
        }// end for loop
   }//end showAllUsers method

   private static int loginBankMachine(){//start login method

      System.out.println("Welcome " +"\nPlease Enter Username : ");
      String uname = input.next();

      System.out.println("password: ");
      String pass = input.next();

      List names = Arrays.asList(nameArray);
      List passwords = Arrays.asList(passcodeArray);

      System.out.println(names.indexOf(uname));
      System.out.println(names.indexOf(pass));

      if(names.contains(uname) && passwords.contains(pass)) {
        if(names.indexOf(uname) == passwords.indexOf(pass)){
          return names.indexOf(uname);
        }
      }

      return -1;
   }//end loginATM

   public static void showMenu(){//start ShowAlternativeOption Method
       System.out.println(" Please select one of the following options available");
        //give the user the menu
           System.out.print("\n1.View Bank Machine Produced Statment \n2.Deposit credits\n3.Withdraw credits\n4.Change Passcode\n5.Exit\n:");//user options
           String option =input.next();//string option

           switch(option){//start switch method
            case "1":
                bankMachineProducedStatement();
                break;//BankMachineProducedStatment option
            case "2":
                depositMoney();
                break;//Deposit Credits option
            case "3":
                withdrawMoney();
                break;//Withdraw Credits option
            case "4":
                changePasscode();
                break;//Change Passcode option
            case "5":
                exit();
                break;//Exit option
            default:
                System.out.println("Oops");
                break;
           }//end switch
   }// end ShowaAlternativeOption method

    public static void bankMachineProducedStatement(){//start BankMachineProducedStatement Method
        System.out.println(" Bank Machine Produced Statment");//Bank Machine Produced Statment Description
        System.out.println("$" +creditsbalanceArray[index] +".00");
        showMenu();
    }//end BankMachineProducedStatement method

    public static void depositMoney(){//start DepositCredits Method
        System.out.println(" Total balance");//Credits Total Description
        System.out.println("$" +creditsbalanceArray[index] +".00");
        System.out.println("How much will you be depositing?");
        int amount = input.nextInt();

        creditsbalanceArray[index] += amount;
        System.out.println(" New balance");//Credits Total Description
        System.out.println("$" +creditsbalanceArray[index] +".00");
        showMenu();
    }//end DepositCredits method

    public static void withdrawMoney(){//start WithdrawCredits Method
        System.out.println(" Total balance");//Credits Total Description
        System.out.println("$" +creditsbalanceArray[index] +".00");
        System.out.println("How much will you be Withdrawing?");
        int amount = input.nextInt();

        while(amount >= creditsbalanceArray[index]) {
          System.out.println("Invalid amount, try again");
          amount = input.nextInt();
        }

        creditsbalanceArray[index] -= amount;
        System.out.println(" New balance");//Credits Total Description
        System.out.println("$" +creditsbalanceArray[index] +".00");
        showMenu();
    }//end WithdrawCredits method

    public static void changePasscode(){

    System.out.println("\nEnter new passcode");
        String newPass = input.next();
        List passwords = Arrays.asList(passcodeArray);

        while(passwords.contains(newPass)){
            System.out.println("passcode taken, try again:"); //totally not vulnerable password checking
            newPass = input.next();
        }

        passcodeArray[index] = newPass;
        showMenu();
    }//end changePasscode Method

    public static boolean errorCheck(String input) {
        return true;
    }

    public static void exit(){
        System.out.println("Thank you for using our bank machine");
        System.exit(0);
    }//end Exit method
}//end class