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Java Challenge: Simple Inventory Management System
This topic is assigned to Ghenadies
enzojade62 2023 November 27 06:06

Ready for a Java challenge? In this blog post, we'll tackle a programming assignment that involves creating a basic inventory management system for a store. This assignment will test your Java programming skills and your ability to design and implement a simple business application. If you need assistance, our programming assignment help service is here to guide you through the process. Visit

Problem Description

The Task:

Your mission is to create a Java program that simulates an inventory management system for a store. The system should allow the user to add new products, update product quantities, view the current inventory, and generate a sales report.

How to Approach the Problem:

Let's break down the problem into manageable steps:

Step 1: Define Product Class

Create a Java class named Product to represent products in the inventory. Include attributes such as product ID, name, quantity, and price.

Step 2: Inventory Management

Implement a class named InventoryManager to handle operations on the inventory. Include methods for adding new products, updating quantities, and generating sales reports.

Step 3: User Interface

Create a simple user interface using the console. Allow the user to interact with the system by adding or updating products and viewing the current inventory.

Step 4: Sales Report

Implement logic to generate a sales report, showing the total revenue based on the products sold and their quantities.

Step 5: Testing

Test your implementation by adding products, updating quantities, and generating sales reports. Ensure that the inventory management system behaves correctly and provides the expected results.


Let's walk through a simplified example to give you an idea. The provided Java solution serves as a guide to help you implement your own solution. Understand the logic behind each step and adapt it to your programming style.

import java.util.ArrayList;
import java.util.List;

class Product {
    private int id;
    private String name;
    private int quantity;
    private double price;

    // Constructors
    public Product(int id, String name, int quantity, double price) { = id; = name;
        this.quantity = quantity;
        this.price = price;

    // Getters and setters
    public int getId() {
        return id;

    public String getName() {
        return name;

    public int getQuantity() {
        return quantity;

    public double getPrice() {
        return price;

    public void setQuantity(int quantity) {
        this.quantity = quantity;

    // Other getters and setters if needed

class InventoryManager {
    private List<Product> inventory = new ArrayList<>();

    public void addProduct(Product product) {
        System.out.println("Product added to the inventory: " + product.getName());

    public void updateQuantity(int productId, int newQuantity) {
        for (Product product : inventory) {
            if (product.getId() == productId) {
                System.out.println("Quantity updated for product " + product.getName() +
                        ". New quantity: " + newQuantity);
        System.out.println("Product with ID " + productId + " not found in the inventory.");

    public void generateSalesReport() {
        double totalRevenue = 0.0;
        System.out.println("Sales Report:");
        System.out.printf("%-5s %-15s %-10s %-10s %-15s%n",
                "ID", "Product Name", "Quantity", "Price", "Total Revenue");
        for (Product product : inventory) {
            double productRevenue = product.getPrice() * product.getQuantity();
            totalRevenue += productRevenue;
            System.out.printf("%-5d %-15s %-10d %-10.2f %-15.2f%n",
                    product.getId(), product.getName(), product.getQuantity(),
                    product.getPrice(), productRevenue);
        System.out.printf("Total Revenue: %.2f%n", totalRevenue);

    // Other inventory management methods

public class Main {
    public static void main(String[] args) {
        // Create instances of Product and InventoryManager, and interact with the system
        Product product1 = new Product(1, "Laptop", 10, 899.99);
        Product product2 = new Product(2, "Smartphone", 20, 499.99);

        InventoryManager inventoryManager = new InventoryManager();


        inventoryManager.updateQuantity(1, 8);



This Java programming assignment provides an opportunity to design and implement a simple inventory management system. As you create the system, you'll not only strengthen your Java programming skills but also gain practical experience in building business applications.

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