Question

I am learning java, using the book “Java how to program”. I am solving exercises. In this actual exercise I am supposed to make a program which reads an integer from the user. The program should then display a square of asterisks (*) corresponding to the integer read from the user. F.eks user inputs the integer 3, the program should then display:

***
***
***

I try to nest a while-statement inside another, the first one to repeat the asterisks on one line, the other one to repeat this the right amount of times. Unfortunately, I only get the program to display one line. Could anyone tell me what I am doing wrong please?
The code is as follows:

import java.util.Scanner;
public class Oppgave618 
{

    public static void main(String[] args) 
    {
    int numberOfSquares;
    Scanner input = new Scanner(System.in);
    System.out.print("Type number of asterixes to make the square: ");
    numberOfSquares = input.nextInt();

        int count1 = 1;
    int count2 = 1;

    while (count2 <= numberOfSquares)

        {
        while (count1 <= numberOfSquares)
            {
            System.out.print("*");
            count1++;
            }
        System.out.println();
        count2++;
        }

    }

}

Answer 1

You should reset count1 back in each iteration of the outer loop

public static void main(String[] args)  {
    int numberOfSquares;
    Scanner input = new Scanner(System.in);
    System.out.print("Type number of asterixes to make the square: ");
    numberOfSquares = input.nextInt();
             //omitted declaration of count1 here
    int count2 = 1;
    while (count2 <= numberOfSquares) {
        int count1 = 1; //declaring and resetting count1 here
        while (count1 <= numberOfSquares) {
            System.out.print("*");
            count1++;
        }
        System.out.println();
        count2++;
    }
}