Divisible by 3

package com.company;

import java.util.ArrayList;
import java.util.Scanner;
import java.util.stream.Collectors;

public class Main {

    public static void main(String[] args) {

        Scanner console = new Scanner(System.in);

        int n = Integer.parseInt(console.nextLine());
        int current = 3;
        ArrayList<Integer> list = new ArrayList<>();

        for (int i = n; i > 0; i--) {
            list.add(current);
            current += 3;
        }

        System.out.println(
                list.stream()
                    .map(Object::toString)
                    .collect(Collectors.joining(", ")));
    }
}