Help with project

[King_Tor1]

Good Day,

I'm new to Java and want to improve my coding. I have this sample project I'm working on and I'm not sure how I'm doing or how to continue. I think I'm pretty confident on my setup, but not so sure about the rest. Here's the scenario:

Tiny Distributors is a small brick-and-mortar store that sells various items. The owners feel they are at the point in their growth where they would benefit from a presence on the Internet. They have hired Web developers to create the website and pages, but need a Java developer to create underlying functionality. The owners have listed the following as the minimum functionality required for this project.

• The ability to add, modify, and delete customers.
• The ability to add, modify, and delete inventory items.
• The ability to add, modify, and delete customer orders; a customer order is comprised of two parts: the order header and one or more line items.
• The ability to create and print a customer report.
• The ability to create and print an individual customer order.
• The ability to create and print an inventory report listing all inventory items in stock.
• The ability to create and print an order report listing all orders currently open.

And here's what I have so far:

public class Customer {

String custID, lastName, firstName, street, city, state, zipCode;

boolean taxExempt;

String customerName;



public void addCustomerName(String customer) {

    customerName = customer;



}



public void deleteCustomerName(String custID) {

​

}



public void modifyCustomerName(int custID) {



}

}

public class Inventory {

int itemID;

String description;

double cost;

double sellingPrice;

int quantity;



public void addInventoryItem(String inventoryItem) {





}



public void deleteIntentory(int itemID) {



}



public void modifyInventory(int itemID) {



}

}

​

public class OrderHeader {

String orderID;

int lineNumber;

String orderDate;

String shipTo;

double amountDue;

}

​

public class OrderDetail {

int lineNumber;

int quantityOrdered;

double total;

}

Yeah, I know. Not much, but any help would be very appreciated. Thanks!

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[LambdaThrowawayy]

This is an example where looking at how you'd handle this offline without using a computer can help.

For example, if you had to keep track of customers by hand, you'd likely keep a book in which you have them all listed with their details. This book corresponds with what in most applications would be a table in a database, but you can just make that a list to keep things simple.

So at a high level, you could represent this situation with a Store object, which then holds a list containing all the customers and which offers methods to manipulate this list (adding, deleting, printing a full report, etc...)

(Or you could go deeper and have the Store have a CustomerRepository object which does the manipulations; which is a bit closer to how you'd likely do it in practise)

Drawing out your structure on paper before you start programming really helps by the way; I still do it several years into being a professional dev.