02. Rectangle of N x N Stars(with or not repeat())

import java.util.Scanner;

public class RectangleOfNStars {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = Integer.parseInt(scanner.nextLine());
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++) {
                System.out.print('*');
            }
            System.out.println();
        }
    }
}

ИЛИ:

import java.util.Scanner;

public class 02. RectangleOfNStars {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = Integer.parseInt(scanner.nextLine());
        for (int i = 0; i < n; i++) {
            System.out.println(("*").repeat(n));
        }
    }
}