LinkedList example and overriding the toString() method

Main2.java

import java.util.LinkedList;

class ProductItem {
    private int productId;
    private String productName;

    public ProductItem(int productId, String productName) {
        this.productId = productId;
        this.productName = productName;
    }

    public int getProductId() {
        return productId;
    }

    public String getProductName() {
        return productName;
    }

    @Override
    public String toString() {
        return "Product{" +
                "productId=" + productId +
                ", productName='" + productName + '\'' +
                '}';
    }
}



public class Main2 {
    public static void main(String[] args) {
        // Create a linked list of products
        LinkedList<ProductItem> productList = new LinkedList<>();

        // Add some products
        productList.add(new ProductItem(101, "Smartphone"));
        productList.add(new ProductItem(102, "Laptop"));
        productList.add(new ProductItem(103, "Headphones"));

        // Display the linked list
        System.out.println("Linked List of Products:");
        for (ProductItem product : productList) {
            System.out.println(product);
        }

        // Add a new product at the beginning
        productList.addFirst(new ProductItem(100, "Tablet"));

        // Remove the last product
        productList.removeLast();

        // Display the updated linked list
        System.out.println("\nUpdated Linked List of Products:");
        for (ProductItem product : productList) {
            System.out.println(product);
        }
    }
}