Diamond - Drawing with Java

import java.util.Scanner;
public class Main {
    public static void main(String[]args){
        Scanner input = new Scanner(System.in);
        int n = Integer.parseInt(input.nextLine());

        System.out.println(repeatString(".", n) + repeatString("*", n * 3) + repeatString(".", n));
        for (int i = 0; i < n - 1; i++) {
            System.out.println(repeatString(".", (n - 1) - i) + "*" + repeatString(".", (n * 3) + i * 2) + "*" + repeatString(".", (n - 1) - i));
        }
        System.out.println(repeatString("*", n * 5));
        for (int i = 0; i < n * 2 ; i++) {
            System.out.println(repeatString(".", 1 + i) + "*" + repeatString(".", (n * 5 - 4 ) - i * 2) + "*" + repeatString(".", 1 + i));
        }
        System.out.println(repeatString(".", n * 2 + 1) + repeatString("*",(n * 5) - n * 4 - 2 ) + repeatString(".", n * 2 + 1));
    }
    public static String repeatString (String str, int counter) {
        String text = "";
        for (int i = 0; i < counter; i++) {
            text += str;
        }
        return text;
    }
}