import java.util.*;

import java.util.stream.Collectors;

public class Main {

public static void main(String[] args) {

List<GroceryItem> items = List.of(

new GroceryItem("Apple", "Fruit", 1.2, true),

new GroceryItem("Milk", "Dairy", 2.5, false),

new GroceryItem("Broccoli", "Vegetable", 1.8, true),

new GroceryItem("Cheese", "Dairy", 4.0, false),

new GroceryItem("Banana", "Fruit", 0.9, false)

);

System.out.println("✅ All Grocery Items:");

items.forEach(System.out::println);

System.out.println("\n🟢 Organic Items:");

items.stream()

.filter(GroceryItem::isOrganic)

.forEach(System.out::println);

System.out.println("\n🍌 Fruits Under ₹2:");

items.stream()

.filter(i -> i.getCategory().equalsIgnoreCase("Fruit") && i.getPrice() < 2)

.forEach(System.out::println);

double dairyTotal = items.stream()

.filter(i -> i.getCategory().equalsIgnoreCase("Dairy"))

.mapToDouble(GroceryItem::getPrice)

.sum();

System.out.println("\n🧀 Total Cost of Dairy Items: ₹" + dairyTotal);

System.out.println("\n📊 Items Sorted by Price:");

items.stream()

.sorted(Comparator.comparingDouble(GroceryItem::getPrice))

.forEach(System.out::println);

System.out.println("\n📦 Grouped by Category:");

Map<String, List<GroceryItem>> grouped = items.stream()

.collect(Collectors.groupingBy(GroceryItem::getCategory));

grouped.forEach((category, list) -> {

System.out.println(category + ":");

list.forEach(item -> System.out.println(" - " + item));

});

}

}