Java Print Circle using Aestricks

public class PrintCircle {

    public static void main(String[] args) { 
        int n = 5;

        for (int i = -n; i <= n; i++) {
            for (int j = -n; j <= n; j++) {
                if (i*i + j*j <= n*n) System.out.print("* ");
                else                  System.out.print("  ");
            }
            System.out.println();
        }
    }
}