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Okay, I discovered that the issue is with the following:

we are asked to use the following code to generate a unique customerID number.


long customerID =...

Here posting the entire process:


*** ***
*** Welcome to Cash for Metals Calculator!!! ***
*** ***
1. Create Personal Customer
2. Create Commercial Customer
3. Record...

So the following is correct because account 123 does not exist.

*** ***
*** Welcome to Cash for Metals Calculator!!! ***
*** ***
1. Create Personal Customer
2. Create...

ok if I remove the if (trans != null) error



public static Transaction recordTransaction(){

System.out.println("Enter the customer ID to create the transaction > ");

...

The problem that i am trying to solve in this situation is the following:
the customer id is entered, and if the customer id is not matched in the array, the error read out in case 3 is generated...

This is the part that is tripping me up. In addition I have the following helper method. Could I use it in this situation?

// Helper method to determine if a customer exists
public static...

I was given the following code by my prof.



public static void main(String[] args) {

Customer customer;
Transaction transaction;
double withdrawalAmount...