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Thread: Need help developing a basic credit program in Java

  1. #1
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    Default Need help developing a basic credit program in Java

    So right now I need to make a program that can determine if several department store customers have exceeded their credit limit on a charge account. I have the account number, balance at the beginning of the month, total of all items charged by the customer this month, total of all credits applied to the customer's account this month, and the allowed credit limit. It needs to input all of these as integers and calculate the new balance using "= beginning balance + charges - credit", display the balance, and determine if it exceeds their credit limit, and display a message if it has exceeded it.

    I have the general format down (I hope),

    import java.util.Scanner;
     
    public class Credit
    {
    //calculates the balance on several credit accounts
    public void calculateBalance()
    {
    Scanner input = new Scanner( System.in );
     
    int account; //account number
    int oldBalance; //starting balance
    int charges; //total charges
    int credits; //total credits
    int creditLimit; //allowed credit limit
    int newBalance; //new balance
     
    System.out.print( "Enter Account Number (or -1 to quit): " );
     
    int i = scan.nextInt();
     
    //stuff I need to figure out
     
     
     
    }
     
     
    }

    I've been at this for hours and I can't figure this out. I'm not asking for like full answers just things to help me get on the right track.


  2. #2
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: Need help developing a basic credit program in Java

    What's the very next thing you know you need to do? Once you have the account number, what do you do with it?

    You have all the necessary pieces here, now it's just a matter of recombining them to do what you want.
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  3. #3
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    Default Re: Need help developing a basic credit program in Java

    Well I know I need to input an integer and store it, then I probably got to get it to loop and some other stuff like that. The problem is that I don't know how to turn that into code.

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    Default Re: Need help developing a basic credit program in Java

    i would first start by moving those variables outside of calculateBalance() to make them data members... then i would make additional methods to get and set the account number, get and set total credits, make a boolean method to determine if total credit limit has been reached and then use your calculateBalance method... trying to do all of this in one big method may get messy so it's best to separate tasks for more flexibility

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    Default Re: Need help developing a basic credit program in Java

    I'm not sure what you mean and I'm still pretty lost. Like I know what I have to do, it's just a matter of figuring out how to actually do it. Like after the print.ln, I'm completely lost.

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    Default Re: Need help developing a basic credit program in Java

    like how u made public void calculateBalance() that's a method... make a few more methods but name them getAcctNum(), setAcctNum() and so forth for the other methods i suggested... the boolean method should just be public boolean and name the method something that implies checking the credit limit... copy all of those int variables out of the calculateBalance method and just paste them above your first comment to make them data members

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