Upper triangle digital triangle (Java)

Input a positive integer n, and output an upper triangular digital triangle with n layers.

Input format:
There is only one positive integer n, 1<=n<=100.

Output format:
an upper triangle number triangle, each number occupies four character positions.

Input example:
5

Sample output:

import java.util.Scanner;

public class Main{
    
    
    public static void main(String[] args) {
    
    
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int num=1 ;
        for (int i = 0; i < n ; i++) {
    
    
            for (int j = 0; j <n-i; j++) {
    
    
                System.out.printf("%4d",num++);
            }
            System.out.println();
        }
    }
}