Практика5.1

package com.company;

import java.util.ArrayList;
import java.util.Arrays;

public class Main {

    public static class HeavyBox
    {
        public String id;
        public int weight;

        public HeavyBox(String id, int weight)
        {
            this.id = id;
            this.weight = weight;
        }

        public void Print()
        {
            System.out.println(id);
            System.out.println(weight + "\n");
        }
    }

    public static void main(String[] args)
    {
        HeavyBox Box1 = new HeavyBox("Тяжелый", 789);
        HeavyBox Box2 = new HeavyBox("Средний", 237);
        HeavyBox Box3 = new HeavyBox("Легкий", 34);
        ArrayList<HeavyBox> Warehouse = new ArrayList<>(Arrays.asList(Box1, Box2, Box3));

        for (HeavyBox Box : Warehouse) {
            Box.Print();
        }

        Box1.weight=1;
        System.out.println("Вес первого ящика: " +Box1.weight);
        Warehouse.remove(2);
        Warehouse.clear();
        if (Warehouse.isEmpty()) {System.out.println("Все ящики удалены");}
    }
}