Thread: Printing 2d array

I have to write a program for my programming class prints out a table filled with "-"s and randomly fills them with "#"s. So first, I have to create a 2d array where the number of rows and columns are given by the user. Then, I have to print the initial table with all "-"s. So, I created a boolean array with the number of rows and columns as the user input, and make a for loop to set every spot in the array as false. Then I may a loop that says if the spot is false, print out a "-". If I enter a number over 1 for the column or row, it won't work. If I put 1, it runs but doesn't print out. Please help! What am I doing wrong? A sample of the output would be:

Rows: 5
Columns: 8

- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -

Heres the code

public class Matrix2 {
 
import java.util.Random;
import java.util.Scanner;
 
 
	public static void main(String[] args) {
 
		Scanner console = new Scanner(System.in);
		System.out.println("Number of rows?");
		int rows = console.nextInt();
 
		System.out.println("Number of columns?");
		int columns = console.nextInt();
 
 
		boolean board[][] = new boolean[rows][columns];
 
		for (int i = 1; i < rows; i++) {
			for (int j = 1; j < columns; j++) {
 
				board[rows][columns] = false;
 
			}
		}
 
		for (int i = 1; i < rows; i++) {
			for (int j = 1; j < columns; j++) {
 
				if(board[rows][columns] == false) {
					System.out.print("-");
 
				}
 
			}
			System.out.println();
		}
	}
}