Помогите, не понимаю я.
package com.javarush.task.task04.task0436;
/*
Рисуем прямоугольник
*/
import java.util.Arrays;
import java.io.*;
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader number8 = new BufferedReader(new InputStreamReader(System.in));
int m = Integer.parseInt(number8.readLine());
int n = Integer.parseInt(number8.readLine());
int []ar = new int[m];
Arrays.fill(ar, 8);
int b = 1;
while (b<=n) {
System.out.println(ar);
b++;
}
}
}