Solution: Inventory Price Updater

import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
public class Main {
    public record Product(int id, String name, double price) {}
    public static void updatePrices(String inputPath, String outputPath) throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        File inputFile = new File(inputPath);
        File outputFile = new File(outputPath);
        // Read JSON directly into a Product array
        Product[] products = mapper.readValue(inputFile, Product[].class);
        // Iterate and update prices
        for (int i = 0; i < products.length; i++) {
            Product original = products[i];
            
            // Calculate new price (increase by 10%)
            double newPrice = original.price() * 1.10;
            
            // Optional: Round to 2 decimal places
            newPrice = Math.round(newPrice * 100.0) / 100.0;
            // Create new record and replace in array
            products[i] = new Product(original.id(), original.name(), newPrice);
        }
        // Write the updated array back to JSON
        mapper.writeValue(outputFile, products);
    }
    public static void main(String[] args) {
        try {
            String inputFile = "products.json";
            String outputFile = "updated-products.json";
            // Run the update
            updatePrices(inputFile, outputFile);
            // Verify Output
            Path resultPath = Path.of(outputFile);
            if (Files.exists(resultPath)) {
                System.out.println("Updated Inventory:");
                System.out.println(Files.readString(resultPath));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}