Answer to Question #239344 in Java | JSP | JSF for Jaden

Question

1. In your solution, you must create a class called Products, which will contain all your working
methods.
2. This class will, as a minimum, contain the following methods, but you are encouraged to
add more methods:
• SearchProduct();
• SaveProduct();
• UpdateProduct();
• DeleteProduct();
• DisplayMenu();
• CaptureProduct();
• ExitApplication();
3. Finally, create a main class to run your application

Answer 1

public class Product {
    private String name;

    public Product(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

import java.util.ArrayList;
import java.util.Scanner;

public class Products {
    private ArrayList<Product> products;

    public Products() {
        products = new ArrayList<>();
    }

    public Product searchProduct() {
        System.out.println("Enter the name of the product:");
        String name = new Scanner(System.in).nextLine();
        for (Product product : products) {
            if (product.getName().equals(name)) {
                return product;
            }
        }
        return null;
    }


    public void saveProduct(Product product) {
        products.add(product);
    }


    public void updateProduct() {
        Product product = searchProduct();
        if (product == null) {
            System.out.println("Not found");
            return;
        }
        System.out.println("Enter new name:");
        product.setName(new Scanner(System.in).nextLine());
    }


    public void deleteProduct() {
        Product product = searchProduct();
        if (product == null) {
            System.out.println("Not found");
            return;
        }
        products.remove(product);
    }


    public void displayMenu() {
        System.out.println("1. Search product\n" +
                "2. Save product\n" +
                "3. Update product\n" +
                "4. Delete product\n"
                + "5. Capture product\n"
                + "6. Exit");
    }


    public Product captureProduct() {
        System.out.println("Enter the name of the product:");
        return new Product(new Scanner(System.in).nextLine());
    }


    public void exitApplication() {
        System.exit(0);
    }
}

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Products products = new Products();
        Scanner in = new Scanner(System.in);
        String choice;
        Product product = null;
        while (true) {
            products.displayMenu();
            choice = in.nextLine();
            switch (choice) {
                case "1":
                    product = products.searchProduct();
                    if (product != null) {
                        System.out.println(product.getName());
                        product = null;
                    }else{
                        System.out.println("Not found");
                    }
                    break;
                case "2":
                    if (product != null) {
                        products.saveProduct(product);
                        product = null;
                    } else {
                        System.out.println("Capture product.");
                    }
                    break;
                case "3":
                    products.updateProduct();
                    break;
                case "4":
                    products.deleteProduct();
                    break;
                case "5":
                    product = products.captureProduct();
                    break;
                case "6":
                    products.exitApplication();
                    break;

            }
        }
    }
}