Program that takes user input and lists multiples of 7 according to that number (Java)

Question

Here is my code to create a program that takes a user input and lists multiples of 7 that relate to that number.

For example: The user inputs 3, I need the output to be "7, 14, 21".

Currently if I enter a number less than 7, the program complies without printing an output, but as soon as I enter 7 or any number higher than 7 then the program compiles and prints exactly what I need it to.

So the problem I need to fix is to be able to enter a number lower than 7 and recieve the correct output.

Thanks in advance!

import java.util.Scanner;

public class MultiplesOfSeven {

  public static void main(String[] args){
    int j = 0;

    Scanner scan = new Scanner(System.in);
    int n = scan.nextInt();

    for(j = 1; j <= n; j++){
        if(j % 7 == 0){
            System.out.print(j + " ");

            for (int counter = 0 ; counter < n ; counter++) {
                System.out.print(j*(2 + counter) + " ");
            }       
        }
    }        
}

Answer 1

Don't overthink the loop here. As alternatives, both which mean you can delegate the % check, consider

for (j = 0; j < n; ++j){
    // output (j + 1) * 7;
}

or, the less elegant due to your having to write 7 in three places

for (j = 7; j <= n * 7; j += 7){
    // output j
}