java_interface

Java Order Management System

This project is a simple Java-based order management system. It allows you to manage clients, products, and orders, and calculate the total invoice amount for a given order.

Project Structure

• src/Client.java: Defines the Client class with attributes id and nom.
• src/LigneCommande.java: Defines the LigneCommande class with attributes produit, prix, and quantite.
• src/Main.java: The main entry point of the application. It creates instances of Metier, Produit, LigneCommande, and Client, and calculates the invoice for a sample order.
• src/Metier.java: Implements the IMetier interface, providing methods to manage orders and calculate invoices.

Classes

Client

Represents a client with an ID and a name.

LigneCommande

Represents a line item in an order, including the product, price, and quantity.

Main

The main class that initializes the application and demonstrates its functionality.

Metier

Implements the business logic for managing clients, products, and orders.

Usage

1. Clone the repository.
2. Open the project in IntelliJ IDEA.
3. Run the Main class to see the sample output.

Example

The Main class demonstrates how to create clients, products, and orders, and how to calculate the total invoice amount for an order.

public class Main {
    public static void main(String[] args) {
        // Create instance of Metier
        Metier metier = new Metier();

        // Create some products
        Produit produit1 = new Produit(1, "Laptop", 1.0);
        Produit produit2 = new Produit(2, "Smartphone", 00.0);
        Produit produit3 = new Produit(3, "Headphones", 1.0);

        LigneCommande lc1 = new LigneCommande(produit1, 1200, 10);
        LigneCommande lc2 = new LigneCommande(produit2, 3200, 8);
        LigneCommande lc3 = new LigneCommande(produit3, 200, 9);

        Client c1 = new Client(1, "mehdi");
        Client c2 = new Client(2, "omar");
        Client c3 = new Client(3, "salah");

        ArrayList<LigneCommande> al = new ArrayList<>();
        al.add(lc1);
        al.add(lc2);
        al.add(lc3);

        Commande cmd1 = new Commande(1, al, c1, "23-04-2005");
        IMetier ts = new Metier();

        System.out.println(ts.calculFacture(cmd1));
    }
}