So I am creating a bank account program that uses an ArrayList. The program displays a menu where a customer can deposit, withdraw, display account info and check balance. The array list stores the customer object and should be able to be updated if user deposits/withdraws etc.
Here is what I have so far, I am unsure how to call the methods for deposit, withdraw, display account info, and check balance that are in the Customer class and have them access the array list objects correctly.
Any help or advice at all as to what I am missing would be so helpful.
the errors I am getting right now are: cannot find symbol symbol : variable customerID location: class java.util.ArrayList for all of the variables in the display and balance method,
cannot find symbol symbol : constructor Customer() location: class taylor.Customer when I try to create a Customer instance,
display(java.util.ArrayList) in taylor.Customer cannot be applied to (taylor.Customer), when I try to call the methods and pass in the array list accounts
tester class:
package taylor;
import java.util.ArrayList;
import java.util.Scanner;
public class TestBank{
public static void main(String args[]){
ArrayList<Customer> accounts = new ArrayList<Customer>();
Customer customer1 = new Customer(1, "Savings", "US Dollars", 800);
Customer customer2 = new Customer(2, "Checking", "Euro", 1900);
Customer customer3 = new Customer(3, "Checking", "US Dollars", 8000);
accounts.add(customer1);
accounts.add(customer2);
accounts.add(customer3);
int customerID=4;
String choice;
int deposit;
int withdraw;
Scanner in = new Scanner(System.in);
Customer operation = new Customer();
boolean flag = true;
String accountType;
String currencyType;
int balance;
while(flag){
System.out.println("Select a choice:");
System.out.println("1. Existing customer");
System.out.println("2. New customer");
System.out.println("3. Quit");
String input = in.next();
//existing user
if(input.equals("1")){
System.out.println("Enter CustomerID: ");
customerID = in.nextInt();
System.out.println("Would you like to: ");
System.out.println("1. Deposit ");
System.out.println("2. Withdraw ");
System.out.println("3. Display account info ");
System.out.println("4. Check balance ");
choice = in.next();
if(choice.equals("1")){
System.out.println("How much would you like to deposit?");
deposit = in.nextInt();
operation.deposit(deposit);
}
else if (choice.equals("2")){
System.out.println("How much would you like to withdraw?");
withdraw = in.nextInt();
operation.withdraw(withdraw);
}
else if (choice.equals("3")){
operation.display(accounts.get(customerID));
}
else if (choice.equals("4"))
operation.balance(accounts.get(customerID));
else
System.out.println("Invalid");
}
//new user
else if(input.equals("2")){
//add new user to arraylist
int newID = customerID + 1;
System.out.println("Enter account type: ");
accountType = in.next();
System.out.println("Enter currency type: ");
currencyType = in.next();
System.out.println("Enter initial balance: ");
balance = in.nextInt();
System.out.println("Your customer ID will be: " + newID);
accounts.add(new Customer(newID, accountType, currencyType, balance));
}
else if(input.equals("3")){
System.out.println("Thanks for using this bank!");
flag = false;
}
else{
System.out.println("Invalid");
}
}
}
}
customer class:
package taylor;
import java.util.Scanner;
import java.util.ArrayList;
public class Customer{
String accountType, currencyType, info;
int customerID, balance, amount;
Scanner input = new Scanner(System.in);
public Customer(int customerID, String accountType, String currencyType, int balance){
this.accountType = accountType;
this.currencyType = currencyType;
this.customerID = customerID;
this.balance = balance;
this.amount = amount;
}
public int deposit(int amount){
amount = input.nextInt();
if (amount >= 500) {
System.out.println("Invalid");
}
else{
balance = balance + amount;
}
return balance;
}
public int withdraw(int amount){
if (balance < amount) {
System.out.println("Invalid amount.");
}
else if (amount >= 500) {
System.out.println("Invalid");
}
else {
balance = balance - amount;
}
return balance;
}
public void display(ArrayList<Customer> accounts) {
System.out.println("CustomerID:" + accounts.customerID);
System.out.println("Account Type:" + accounts.accountType);
System.out.println("Currency Type: " + accounts.currencyType);
System.out.println("Balance:" + accounts.balance);
}
public void balance(ArrayList<Customer> accounts) {
System.out.println("Balance:" + accounts.balance);
}
}
The problem is that you never initialize any of the fields in BankAccount. Remove the
voidfrom the BankAccount constructor to make it a constructor and use that constructor when you build the class in TestBank.Since these fields are duplicates of the ones in Customer, it seems that it would be best to do something like
customer.deposit(amount), etc. Remove your BankAccount class and move your methods to Customer and add the parameterint amountto the methods that use amount. Then in your TestBank class change the deposit, etc. method calls to have an amount parameter.Also, you can get rid of the getter and setter methods in Customer.