C#Exams 3. Arrow (on Java Code)

import java.util.Scanner;

public class _3_Arrow {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner scan = new Scanner(System.in);
        int number = scan.nextInt();

        String outerDotSeq = newString('.', (number / 2));

        // Print the Top line of the Arrow:
        System.out.printf("%1$s%2$s%1$s\n", outerDotSeq, newString('#', number));

        String innerDotSeq = newString('.', (number - 2));

        // Print next before the Middle line of the Arrow:
        for (int row = 1; row < (number - 1); row++) {
            System.out.printf("%1$s#%2$s#%1$s\n", outerDotSeq, innerDotSeq);
        }

        // Print the Middle line of the Arrow:
        System.out.printf("%1$s%2$s%1$s\n", newString('#', (number / 2) + 1),
                innerDotSeq);

        // Print next before the Bottom line of the Arrow:
        int innerDots = (2 * number) - 5;
        for (int row = 1; row < (number - 1); row++) {
            outerDotSeq = newString('.', row);
            innerDotSeq = newString('.', innerDots);
            System.out.printf("%1$s#%2$s#%1$s\n", outerDotSeq, innerDotSeq);
            innerDots -= 2;
        }

        // Print the Bottom line of the Arrow:
        System.out.printf("%1$s#%1$s", newString('.', number - 1));
    }

    private static String newString(char ch, int size) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < size; i++) {
            sb.append(ch);
        }

        return sb.toString();
    }
}