Практика5.3

package com.company;

import java.util.TreeSet;

public class Main {

    public static class HeavyBox implements Comparable {
        public int weight;

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

        public void Print() {
            System.out.println(weight);
        }

        @Override
        public int compareTo(Object o) {
            return 1;
        }
    }

    public static void main(String[] args) {
        TreeSet<HeavyBox> Tree = new TreeSet<>();
        Tree.add(new HeavyBox(789));
        Tree.add(new HeavyBox(237));
        Tree.add(new HeavyBox(340));
        Tree.add(new HeavyBox(300));
        Tree.add(new HeavyBox(34));

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